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Finding the Fourth Proportional to 14,953.86, 20,637 and 8,988.30

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Solution

The fourth proportional to 14,953.86, 20,637 and 8,988.30 is: 12,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,953.86 : 20,637 = 8,988.30 : x
  2. Step 2: Convert to fraction form
    14,953.86/20,637 = 8,988.30/x
  3. Step 3: Cross multiply
    14,953.86x = 20,637 × 8,988.30
  4. Step 4: Simplify right side
    14,953.86x = 185,491,547.10
  5. Step 5: Solve for x
    x = 185,491,547.10/14,953.86
  6. Step 6: Final answer
    x = 12,404.26

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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.