Home / 28,285.49-42,428.40-9,565.66

Finding the Fourth Proportional to 28,285.49, 42,428.40 and 9,565.66

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Solution

The fourth proportional to 28,285.49, 42,428.40 and 9,565.66 is: 14,348.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,285.49 : 42,428.40 = 9,565.66 : x
  2. Step 2: Convert to fraction form
    28,285.49/42,428.40 = 9,565.66/x
  3. Step 3: Cross multiply
    28,285.49x = 42,428.40 × 9,565.66
  4. Step 4: Simplify right side
    28,285.49x = 405,855,648.74
  5. Step 5: Solve for x
    x = 405,855,648.74/28,285.49
  6. Step 6: Final answer
    x = 14,348.55

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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.