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Finding the Fourth Proportional to 9,007.68, 13,443.20 and 8,774.40

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Solution

The fourth proportional to 9,007.68, 13,443.20 and 8,774.40 is: 13,095.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,007.68 : 13,443.20 = 8,774.40 : x
  2. Step 2: Convert to fraction form
    9,007.68/13,443.20 = 8,774.40/x
  3. Step 3: Cross multiply
    9,007.68x = 13,443.20 × 8,774.40
  4. Step 4: Simplify right side
    9,007.68x = 117,956,014.08
  5. Step 5: Solve for x
    x = 117,956,014.08/9,007.68
  6. Step 6: Final answer
    x = 13,095.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.