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Finding the Fourth Proportional to 17,878.80, 26,818.20 and 9,584.40

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Solution

The fourth proportional to 17,878.80, 26,818.20 and 9,584.40 is: 14,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,878.80 : 26,818.20 = 9,584.40 : x
  2. Step 2: Convert to fraction form
    17,878.80/26,818.20 = 9,584.40/x
  3. Step 3: Cross multiply
    17,878.80x = 26,818.20 × 9,584.40
  4. Step 4: Simplify right side
    17,878.80x = 257,036,356.08
  5. Step 5: Solve for x
    x = 257,036,356.08/17,878.80
  6. Step 6: Final answer
    x = 14,376.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.