Home / 15,014,752.40-20,720,385.96-8,139,213.20

Finding the Fourth Proportional to 15,014,752.40, 20,720,385.96 and 8,139,213.20

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Solution

The fourth proportional to 15,014,752.40, 20,720,385.96 and 8,139,213.20 is: 11,232,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014,752.40 : 20,720,385.96 = 8,139,213.20 : x
  2. Step 2: Convert to fraction form
    15,014,752.40/20,720,385.96 = 8,139,213.20/x
  3. Step 3: Cross multiply
    15,014,752.40x = 20,720,385.96 × 8,139,213.20
  4. Step 4: Simplify right side
    15,014,752.40x = 168,647,638,914,726.69
  5. Step 5: Solve for x
    x = 168,647,638,914,726.69/15,014,752.40
  6. Step 6: Final answer
    x = 11,232,129.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.