Home / 10,551.47-15,830.81-3,979.53

Finding the Fourth Proportional to 10,551.47, 15,830.81 and 3,979.53

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Solution

The fourth proportional to 10,551.47, 15,830.81 and 3,979.53 is: 5,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,551.47 : 15,830.81 = 3,979.53 : x
  2. Step 2: Convert to fraction form
    10,551.47/15,830.81 = 3,979.53/x
  3. Step 3: Cross multiply
    10,551.47x = 15,830.81 × 3,979.53
  4. Step 4: Simplify right side
    10,551.47x = 62,999,178.34
  5. Step 5: Solve for x
    x = 62,999,178.34/10,551.47
  6. Step 6: Final answer
    x = 5,970.66

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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.