Home / 10,557.18-15,840-3,985.23

Finding the Fourth Proportional to 10,557.18, 15,840 and 3,985.23

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Solution

The fourth proportional to 10,557.18, 15,840 and 3,985.23 is: 5,979.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,557.18 : 15,840 = 3,985.23 : x
  2. Step 2: Convert to fraction form
    10,557.18/15,840 = 3,985.23/x
  3. Step 3: Cross multiply
    10,557.18x = 15,840 × 3,985.23
  4. Step 4: Simplify right side
    10,557.18x = 63,126,043.20
  5. Step 5: Solve for x
    x = 63,126,043.20/10,557.18
  6. Step 6: Final answer
    x = 5,979.44

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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.