Home / 27,123.60-40,685.40-19,693.20

Finding the Fourth Proportional to 27,123.60, 40,685.40 and 19,693.20

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Solution

The fourth proportional to 27,123.60, 40,685.40 and 19,693.20 is: 29,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,123.60 : 40,685.40 = 19,693.20 : x
  2. Step 2: Convert to fraction form
    27,123.60/40,685.40 = 19,693.20/x
  3. Step 3: Cross multiply
    27,123.60x = 40,685.40 × 19,693.20
  4. Step 4: Simplify right side
    27,123.60x = 801,225,719.28
  5. Step 5: Solve for x
    x = 801,225,719.28/27,123.60
  6. Step 6: Final answer
    x = 29,539.80

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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.