Home / 20,754,411.90-31,140,475.20-9,966,159.60

Finding the Fourth Proportional to 20,754,411.90, 31,140,475.20 and 9,966,159.60

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Solution

The fourth proportional to 20,754,411.90, 31,140,475.20 and 9,966,159.60 is: 14,953,492.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,411.90 : 31,140,475.20 = 9,966,159.60 : x
  2. Step 2: Convert to fraction form
    20,754,411.90/31,140,475.20 = 9,966,159.60/x
  3. Step 3: Cross multiply
    20,754,411.90x = 31,140,475.20 × 9,966,159.60
  4. Step 4: Simplify right side
    20,754,411.90x = 310,350,945,863,041.88
  5. Step 5: Solve for x
    x = 310,350,945,863,041.88/20,754,411.90
  6. Step 6: Final answer
    x = 14,953,492.65

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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.