Home / 19,554.40-29,331.60-18,863.20

Finding the Fourth Proportional to 19,554.40, 29,331.60 and 18,863.20

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Solution

The fourth proportional to 19,554.40, 29,331.60 and 18,863.20 is: 28,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,554.40 : 29,331.60 = 18,863.20 : x
  2. Step 2: Convert to fraction form
    19,554.40/29,331.60 = 18,863.20/x
  3. Step 3: Cross multiply
    19,554.40x = 29,331.60 × 18,863.20
  4. Step 4: Simplify right side
    19,554.40x = 553,287,837.12
  5. Step 5: Solve for x
    x = 553,287,837.12/19,554.40
  6. Step 6: Final answer
    x = 28,294.80

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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.