Home / 10,428.35-14,390.87-5,712.53

Finding the Fourth Proportional to 10,428.35, 14,390.87 and 5,712.53

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Solution

The fourth proportional to 10,428.35, 14,390.87 and 5,712.53 is: 7,883.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.35 : 14,390.87 = 5,712.53 : x
  2. Step 2: Convert to fraction form
    10,428.35/14,390.87 = 5,712.53/x
  3. Step 3: Cross multiply
    10,428.35x = 14,390.87 × 5,712.53
  4. Step 4: Simplify right side
    10,428.35x = 82,208,176.08
  5. Step 5: Solve for x
    x = 82,208,176.08/10,428.35
  6. Step 6: Final answer
    x = 7,883.15

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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.