Home / 10,530.38-15,800.18-4,987.68

Finding the Fourth Proportional to 10,530.38, 15,800.18 and 4,987.68

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Solution

The fourth proportional to 10,530.38, 15,800.18 and 4,987.68 is: 7,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,530.38 : 15,800.18 = 4,987.68 : x
  2. Step 2: Convert to fraction form
    10,530.38/15,800.18 = 4,987.68/x
  3. Step 3: Cross multiply
    10,530.38x = 15,800.18 × 4,987.68
  4. Step 4: Simplify right side
    10,530.38x = 78,806,216.84
  5. Step 5: Solve for x
    x = 78,806,216.84/10,530.38
  6. Step 6: Final answer
    x = 7,483.70

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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.