Home / 15,343.63-21,173.30-8,537.47

Finding the Fourth Proportional to 15,343.63, 21,173.30 and 8,537.47

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Solution

The fourth proportional to 15,343.63, 21,173.30 and 8,537.47 is: 11,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343.63 : 21,173.30 = 8,537.47 : x
  2. Step 2: Convert to fraction form
    15,343.63/21,173.30 = 8,537.47/x
  3. Step 3: Cross multiply
    15,343.63x = 21,173.30 × 8,537.47
  4. Step 4: Simplify right side
    15,343.63x = 180,766,349.95
  5. Step 5: Solve for x
    x = 180,766,349.95/15,343.63
  6. Step 6: Final answer
    x = 11,781.20

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1.5x scale

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.