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Finding the Fourth Proportional to 17,886.18, 24,681.76 and 9,928.40

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Solution

The fourth proportional to 17,886.18, 24,681.76 and 9,928.40 is: 13,700.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,886.18 : 24,681.76 = 9,928.40 : x
  2. Step 2: Convert to fraction form
    17,886.18/24,681.76 = 9,928.40/x
  3. Step 3: Cross multiply
    17,886.18x = 24,681.76 × 9,928.40
  4. Step 4: Simplify right side
    17,886.18x = 245,050,385.98
  5. Step 5: Solve for x
    x = 245,050,385.98/17,886.18
  6. Step 6: Final answer
    x = 13,700.54

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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.