Home / 28,220.30-42,337.48-19,916.52

Finding the Fourth Proportional to 28,220.30, 42,337.48 and 19,916.52

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Solution

The fourth proportional to 28,220.30, 42,337.48 and 19,916.52 is: 29,879.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.30 : 42,337.48 = 19,916.52 : x
  2. Step 2: Convert to fraction form
    28,220.30/42,337.48 = 19,916.52/x
  3. Step 3: Cross multiply
    28,220.30x = 42,337.48 × 19,916.52
  4. Step 4: Simplify right side
    28,220.30x = 843,215,267.17
  5. Step 5: Solve for x
    x = 843,215,267.17/28,220.30
  6. Step 6: Final answer
    x = 29,879.74

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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.