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Finding the Fourth Proportional to 15,473.90, 21,353.04 and 9,101.63

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Solution

The fourth proportional to 15,473.90, 21,353.04 and 9,101.63 is: 12,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,473.90 : 21,353.04 = 9,101.63 : x
  2. Step 2: Convert to fraction form
    15,473.90/21,353.04 = 9,101.63/x
  3. Step 3: Cross multiply
    15,473.90x = 21,353.04 × 9,101.63
  4. Step 4: Simplify right side
    15,473.90x = 194,347,522.84
  5. Step 5: Solve for x
    x = 194,347,522.84/15,473.90
  6. Step 6: Final answer
    x = 12,559.70

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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.