Home / 20,862,792,316.60-31,295,700,129.30-12,563,809,660.60

Finding the Fourth Proportional to 20,862,792,316.60, 31,295,700,129.30 and 12,563,809,660.60

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Solution

The fourth proportional to 20,862,792,316.60, 31,295,700,129.30 and 12,563,809,660.60 is: 18,846,624,826.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862,792,316.60 : 31,295,700,129.30 = 12,563,809,660.60 : x
  2. Step 2: Convert to fraction form
    20,862,792,316.60/31,295,700,129.30 = 12,563,809,660.60/x
  3. Step 3: Cross multiply
    20,862,792,316.60x = 31,295,700,129.30 × 12,563,809,660.60
  4. Step 4: Simplify right side
    20,862,792,316.60x = 393,193,219,619,739,992,064
  5. Step 5: Solve for x
    x = 393,193,219,619,739,992,064/20,862,792,316.60
  6. Step 6: Final answer
    x = 18,846,624,826.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.