Home / 19,928,255.20-29,892,382.80-13,125,810.40

Finding the Fourth Proportional to 19,928,255.20, 29,892,382.80 and 13,125,810.40

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Solution

The fourth proportional to 19,928,255.20, 29,892,382.80 and 13,125,810.40 is: 19,688,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928,255.20 : 29,892,382.80 = 13,125,810.40 : x
  2. Step 2: Convert to fraction form
    19,928,255.20/29,892,382.80 = 13,125,810.40/x
  3. Step 3: Cross multiply
    19,928,255.20x = 29,892,382.80 × 13,125,810.40
  4. Step 4: Simplify right side
    19,928,255.20x = 392,361,749,037,021.12
  5. Step 5: Solve for x
    x = 392,361,749,037,021.12/19,928,255.20
  6. Step 6: Final answer
    x = 19,688,715.60

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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.