Home / 14,123.60-21,185.40-8,587.80

Finding the Fourth Proportional to 14,123.60, 21,185.40 and 8,587.80

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Solution

The fourth proportional to 14,123.60, 21,185.40 and 8,587.80 is: 12,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.60 : 21,185.40 = 8,587.80 : x
  2. Step 2: Convert to fraction form
    14,123.60/21,185.40 = 8,587.80/x
  3. Step 3: Cross multiply
    14,123.60x = 21,185.40 × 8,587.80
  4. Step 4: Simplify right side
    14,123.60x = 181,935,978.12
  5. Step 5: Solve for x
    x = 181,935,978.12/14,123.60
  6. Step 6: Final answer
    x = 12,881.70

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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.