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Finding the Fourth Proportional to 15,607.52, 21,533.02 and 8,890.70

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Solution

The fourth proportional to 15,607.52, 21,533.02 and 8,890.70 is: 12,266.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.52 : 21,533.02 = 8,890.70 : x
  2. Step 2: Convert to fraction form
    15,607.52/21,533.02 = 8,890.70/x
  3. Step 3: Cross multiply
    15,607.52x = 21,533.02 × 8,890.70
  4. Step 4: Simplify right side
    15,607.52x = 191,443,620.91
  5. Step 5: Solve for x
    x = 191,443,620.91/15,607.52
  6. Step 6: Final answer
    x = 12,266.11

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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.