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Finding the Fourth Proportional to 9,888,359.40, 14,832,539.10 and 8,187,748.20

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Solution

The fourth proportional to 9,888,359.40, 14,832,539.10 and 8,187,748.20 is: 12,281,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888,359.40 : 14,832,539.10 = 8,187,748.20 : x
  2. Step 2: Convert to fraction form
    9,888,359.40/14,832,539.10 = 8,187,748.20/x
  3. Step 3: Cross multiply
    9,888,359.40x = 14,832,539.10 × 8,187,748.20
  4. Step 4: Simplify right side
    9,888,359.40x = 121,445,095,317,454.62
  5. Step 5: Solve for x
    x = 121,445,095,317,454.62/9,888,359.40
  6. Step 6: Final answer
    x = 12,281,622.30

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Similar ratio
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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.