Home / 21,257,467.20-31,862,581.20-11,679,719.40

Finding the Fourth Proportional to 21,257,467.20, 31,862,581.20 and 11,679,719.40

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Solution

The fourth proportional to 21,257,467.20, 31,862,581.20 and 11,679,719.40 is: 17,506,601.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257,467.20 : 31,862,581.20 = 11,679,719.40 : x
  2. Step 2: Convert to fraction form
    21,257,467.20/31,862,581.20 = 11,679,719.40/x
  3. Step 3: Cross multiply
    21,257,467.20x = 31,862,581.20 × 11,679,719.40
  4. Step 4: Simplify right side
    21,257,467.20x = 372,146,007,775,715.31
  5. Step 5: Solve for x
    x = 372,146,007,775,715.31/21,257,467.20
  6. Step 6: Final answer
    x = 17,506,601.53

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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.