Home / 10,421.32-15,618.38-9,101.94

Finding the Fourth Proportional to 10,421.32, 15,618.38 and 9,101.94

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Solution

The fourth proportional to 10,421.32, 15,618.38 and 9,101.94 is: 13,641.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.32 : 15,618.38 = 9,101.94 : x
  2. Step 2: Convert to fraction form
    10,421.32/15,618.38 = 9,101.94/x
  3. Step 3: Cross multiply
    10,421.32x = 15,618.38 × 9,101.94
  4. Step 4: Simplify right side
    10,421.32x = 142,157,557.66
  5. Step 5: Solve for x
    x = 142,157,557.66/10,421.32
  6. Step 6: Final answer
    x = 13,641.03

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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.