Home / 20,853,619.20-31,280,428.80-20,003,313.60

Finding the Fourth Proportional to 20,853,619.20, 31,280,428.80 and 20,003,313.60

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Solution

The fourth proportional to 20,853,619.20, 31,280,428.80 and 20,003,313.60 is: 30,004,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853,619.20 : 31,280,428.80 = 20,003,313.60 : x
  2. Step 2: Convert to fraction form
    20,853,619.20/31,280,428.80 = 20,003,313.60/x
  3. Step 3: Cross multiply
    20,853,619.20x = 31,280,428.80 × 20,003,313.60
  4. Step 4: Simplify right side
    20,853,619.20x = 625,712,226,828,871.75
  5. Step 5: Solve for x
    x = 625,712,226,828,871.75/20,853,619.20
  6. Step 6: Final answer
    x = 30,004,970.40

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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.