Home / 39,159.24-54,040.14-21,254.40

Finding the Fourth Proportional to 39,159.24, 54,040.14 and 21,254.40

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Solution

The fourth proportional to 39,159.24, 54,040.14 and 21,254.40 is: 29,331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,159.24 : 54,040.14 = 21,254.40 : x
  2. Step 2: Convert to fraction form
    39,159.24/54,040.14 = 21,254.40/x
  3. Step 3: Cross multiply
    39,159.24x = 54,040.14 × 21,254.40
  4. Step 4: Simplify right side
    39,159.24x = 1,148,590,751.62
  5. Step 5: Solve for x
    x = 1,148,590,751.62/39,159.24
  6. Step 6: Final answer
    x = 29,331.28

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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.