Home / 10,557.16-15,840-3,985.24

Finding the Fourth Proportional to 10,557.16, 15,840 and 3,985.24

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Solution

The fourth proportional to 10,557.16, 15,840 and 3,985.24 is: 5,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,557.16 : 15,840 = 3,985.24 : x
  2. Step 2: Convert to fraction form
    10,557.16/15,840 = 3,985.24/x
  3. Step 3: Cross multiply
    10,557.16x = 15,840 × 3,985.24
  4. Step 4: Simplify right side
    10,557.16x = 63,126,201.60
  5. Step 5: Solve for x
    x = 63,126,201.60/10,557.16
  6. Step 6: Final answer
    x = 5,979.47

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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.