Home / 28,215.15-38,943.90-16,285.65

Finding the Fourth Proportional to 28,215.15, 38,943.90 and 16,285.65

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Solution

The fourth proportional to 28,215.15, 38,943.90 and 16,285.65 is: 22,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.15 : 38,943.90 = 16,285.65 : x
  2. Step 2: Convert to fraction form
    28,215.15/38,943.90 = 16,285.65/x
  3. Step 3: Cross multiply
    28,215.15x = 38,943.90 × 16,285.65
  4. Step 4: Simplify right side
    28,215.15x = 634,226,725.04
  5. Step 5: Solve for x
    x = 634,226,725.04/28,215.15
  6. Step 6: Final answer
    x = 22,478.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.