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Finding the Fourth Proportional to 13,892,437.80, 20,838,656.70 and 4,307,740.20

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Solution

The fourth proportional to 13,892,437.80, 20,838,656.70 and 4,307,740.20 is: 6,461,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892,437.80 : 20,838,656.70 = 4,307,740.20 : x
  2. Step 2: Convert to fraction form
    13,892,437.80/20,838,656.70 = 4,307,740.20/x
  3. Step 3: Cross multiply
    13,892,437.80x = 20,838,656.70 × 4,307,740.20
  4. Step 4: Simplify right side
    13,892,437.80x = 89,767,519,180,589.34
  5. Step 5: Solve for x
    x = 89,767,519,180,589.34/13,892,437.80
  6. Step 6: Final answer
    x = 6,461,610.30

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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.