Home / 28,252.60-42,330.30-18,386.80

Finding the Fourth Proportional to 28,252.60, 42,330.30 and 18,386.80

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Solution

The fourth proportional to 28,252.60, 42,330.30 and 18,386.80 is: 27,548.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.60 : 42,330.30 = 18,386.80 : x
  2. Step 2: Convert to fraction form
    28,252.60/42,330.30 = 18,386.80/x
  3. Step 3: Cross multiply
    28,252.60x = 42,330.30 × 18,386.80
  4. Step 4: Simplify right side
    28,252.60x = 778,318,760.04
  5. Step 5: Solve for x
    x = 778,318,760.04/28,252.60
  6. Step 6: Final answer
    x = 27,548.57

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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.