Home / 13,319,931.60-18,381,505.68-7,208,359.92

Finding the Fourth Proportional to 13,319,931.60, 18,381,505.68 and 7,208,359.92

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Solution

The fourth proportional to 13,319,931.60, 18,381,505.68 and 7,208,359.92 is: 9,947,536.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319,931.60 : 18,381,505.68 = 7,208,359.92 : x
  2. Step 2: Convert to fraction form
    13,319,931.60/18,381,505.68 = 7,208,359.92/x
  3. Step 3: Cross multiply
    13,319,931.60x = 18,381,505.68 × 7,208,359.92
  4. Step 4: Simplify right side
    13,319,931.60x = 132,500,508,812,964.34
  5. Step 5: Solve for x
    x = 132,500,508,812,964.34/13,319,931.60
  6. Step 6: Final answer
    x = 9,947,536.73

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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.