Home / 30,439.16-41,927.92-21,470.90

Finding the Fourth Proportional to 30,439.16, 41,927.92 and 21,470.90

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Solution

The fourth proportional to 30,439.16, 41,927.92 and 21,470.90 is: 29,574.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.16 : 41,927.92 = 21,470.90 : x
  2. Step 2: Convert to fraction form
    30,439.16/41,927.92 = 21,470.90/x
  3. Step 3: Cross multiply
    30,439.16x = 41,927.92 × 21,470.90
  4. Step 4: Simplify right side
    30,439.16x = 900,230,177.53
  5. Step 5: Solve for x
    x = 900,230,177.53/30,439.16
  6. Step 6: Final answer
    x = 29,574.74

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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.