Home / 39,130.47-58,643.78-21,315.43

Finding the Fourth Proportional to 39,130.47, 58,643.78 and 21,315.43

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Solution

The fourth proportional to 39,130.47, 58,643.78 and 21,315.43 is: 31,944.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,130.47 : 58,643.78 = 21,315.43 : x
  2. Step 2: Convert to fraction form
    39,130.47/58,643.78 = 21,315.43/x
  3. Step 3: Cross multiply
    39,130.47x = 58,643.78 × 21,315.43
  4. Step 4: Simplify right side
    39,130.47x = 1,250,017,294.20
  5. Step 5: Solve for x
    x = 1,250,017,294.20/39,130.47
  6. Step 6: Final answer
    x = 31,944.86

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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.