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Finding the Fourth Proportional to 15,433.58, 21,298.20 and 8,359.58

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Solution

The fourth proportional to 15,433.58, 21,298.20 and 8,359.58 is: 11,536.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,433.58 : 21,298.20 = 8,359.58 : x
  2. Step 2: Convert to fraction form
    15,433.58/21,298.20 = 8,359.58/x
  3. Step 3: Cross multiply
    15,433.58x = 21,298.20 × 8,359.58
  4. Step 4: Simplify right side
    15,433.58x = 178,044,006.76
  5. Step 5: Solve for x
    x = 178,044,006.76/15,433.58
  6. Step 6: Final answer
    x = 11,536.14

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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.