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Finding the Fourth Proportional to 10,899.76, 15,004.02 and 9,500.08

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Solution

The fourth proportional to 10,899.76, 15,004.02 and 9,500.08 is: 13,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.76 : 15,004.02 = 9,500.08 : x
  2. Step 2: Convert to fraction form
    10,899.76/15,004.02 = 9,500.08/x
  3. Step 3: Cross multiply
    10,899.76x = 15,004.02 × 9,500.08
  4. Step 4: Simplify right side
    10,899.76x = 142,539,390.32
  5. Step 5: Solve for x
    x = 142,539,390.32/10,899.76
  6. Step 6: Final answer
    x = 13,077.30

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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.