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Finding the Fourth Proportional to 11,587.14, 15,984.08 and 7,051.20

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Solution

The fourth proportional to 11,587.14, 15,984.08 and 7,051.20 is: 9,726.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,587.14 : 15,984.08 = 7,051.20 : x
  2. Step 2: Convert to fraction form
    11,587.14/15,984.08 = 7,051.20/x
  3. Step 3: Cross multiply
    11,587.14x = 15,984.08 × 7,051.20
  4. Step 4: Simplify right side
    11,587.14x = 112,706,944.90
  5. Step 5: Solve for x
    x = 112,706,944.90/11,587.14
  6. Step 6: Final answer
    x = 9,726.90

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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.