Home / 28,885.70-43,328.55-18,863.30

Finding the Fourth Proportional to 28,885.70, 43,328.55 and 18,863.30

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Solution

The fourth proportional to 28,885.70, 43,328.55 and 18,863.30 is: 28,294.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.70 : 43,328.55 = 18,863.30 : x
  2. Step 2: Convert to fraction form
    28,885.70/43,328.55 = 18,863.30/x
  3. Step 3: Cross multiply
    28,885.70x = 43,328.55 × 18,863.30
  4. Step 4: Simplify right side
    28,885.70x = 817,319,437.22
  5. Step 5: Solve for x
    x = 817,319,437.22/28,885.70
  6. Step 6: Final answer
    x = 28,294.95

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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.