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Finding the Fourth Proportional to 10,657, 15,987.66 and 4,501

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Solution

The fourth proportional to 10,657, 15,987.66 and 4,501 is: 6,752.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,657 : 15,987.66 = 4,501 : x
  2. Step 2: Convert to fraction form
    10,657/15,987.66 = 4,501/x
  3. Step 3: Cross multiply
    10,657x = 15,987.66 × 4,501
  4. Step 4: Simplify right side
    10,657x = 71,960,457.66
  5. Step 5: Solve for x
    x = 71,960,457.66/10,657
  6. Step 6: Final answer
    x = 6,752.41

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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.