Home / 13,020.64-17,970.24-7,432

Finding the Fourth Proportional to 13,020.64, 17,970.24 and 7,432

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Solution

The fourth proportional to 13,020.64, 17,970.24 and 7,432 is: 10,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.64 : 17,970.24 = 7,432 : x
  2. Step 2: Convert to fraction form
    13,020.64/17,970.24 = 7,432/x
  3. Step 3: Cross multiply
    13,020.64x = 17,970.24 × 7,432
  4. Step 4: Simplify right side
    13,020.64x = 133,554,823.68
  5. Step 5: Solve for x
    x = 133,554,823.68/13,020.64
  6. Step 6: Final answer
    x = 10,257.16

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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.