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Finding the Fourth Proportional to 14,890.88, 20,547.96 and 8,603.12

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Solution

The fourth proportional to 14,890.88, 20,547.96 and 8,603.12 is: 11,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,890.88 : 20,547.96 = 8,603.12 : x
  2. Step 2: Convert to fraction form
    14,890.88/20,547.96 = 8,603.12/x
  3. Step 3: Cross multiply
    14,890.88x = 20,547.96 × 8,603.12
  4. Step 4: Simplify right side
    14,890.88x = 176,776,565.64
  5. Step 5: Solve for x
    x = 176,776,565.64/14,890.88
  6. Step 6: Final answer
    x = 11,871.47

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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.