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Finding the Fourth Proportional to 10,555.88, 14,565.56 and 8,968.91

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Solution

The fourth proportional to 10,555.88, 14,565.56 and 8,968.91 is: 12,375.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,555.88 : 14,565.56 = 8,968.91 : x
  2. Step 2: Convert to fraction form
    10,555.88/14,565.56 = 8,968.91/x
  3. Step 3: Cross multiply
    10,555.88x = 14,565.56 × 8,968.91
  4. Step 4: Simplify right side
    10,555.88x = 130,637,079.07
  5. Step 5: Solve for x
    x = 130,637,079.07/10,555.88
  6. Step 6: Final answer
    x = 12,375.77

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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.