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Finding the Fourth Proportional to 10,899.92, 15,035.88 and 7,368.08

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Solution

The fourth proportional to 10,899.92, 15,035.88 and 7,368.08 is: 10,163.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.92 : 15,035.88 = 7,368.08 : x
  2. Step 2: Convert to fraction form
    10,899.92/15,035.88 = 7,368.08/x
  3. Step 3: Cross multiply
    10,899.92x = 15,035.88 × 7,368.08
  4. Step 4: Simplify right side
    10,899.92x = 110,785,566.71
  5. Step 5: Solve for x
    x = 110,785,566.71/10,899.92
  6. Step 6: Final answer
    x = 10,163.89

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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.