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Finding the Fourth Proportional to 14,244.80, 19,656.16 and 8,939.20

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Solution

The fourth proportional to 14,244.80, 19,656.16 and 8,939.20 is: 12,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,244.80 : 19,656.16 = 8,939.20 : x
  2. Step 2: Convert to fraction form
    14,244.80/19,656.16 = 8,939.20/x
  3. Step 3: Cross multiply
    14,244.80x = 19,656.16 × 8,939.20
  4. Step 4: Simplify right side
    14,244.80x = 175,710,345.47
  5. Step 5: Solve for x
    x = 175,710,345.47/14,244.80
  6. Step 6: Final answer
    x = 12,335.05

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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.