Home / 39,402.36-54,395.28-30,429.72

Finding the Fourth Proportional to 39,402.36, 54,395.28 and 30,429.72

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Solution

The fourth proportional to 39,402.36, 54,395.28 and 30,429.72 is: 42,008.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,402.36 : 54,395.28 = 30,429.72 : x
  2. Step 2: Convert to fraction form
    39,402.36/54,395.28 = 30,429.72/x
  3. Step 3: Cross multiply
    39,402.36x = 54,395.28 × 30,429.72
  4. Step 4: Simplify right side
    39,402.36x = 1,655,233,139.72
  5. Step 5: Solve for x
    x = 1,655,233,139.72/39,402.36
  6. Step 6: Final answer
    x = 42,008.48

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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.