Home / 39,320.16-54,262.44-21,415.15

Finding the Fourth Proportional to 39,320.16, 54,262.44 and 21,415.15

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Solution

The fourth proportional to 39,320.16, 54,262.44 and 21,415.15 is: 29,553.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,320.16 : 54,262.44 = 21,415.15 : x
  2. Step 2: Convert to fraction form
    39,320.16/54,262.44 = 21,415.15/x
  3. Step 3: Cross multiply
    39,320.16x = 54,262.44 × 21,415.15
  4. Step 4: Simplify right side
    39,320.16x = 1,162,038,359.79
  5. Step 5: Solve for x
    x = 1,162,038,359.79/39,320.16
  6. Step 6: Final answer
    x = 29,553.25

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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.