Home / 39,462.78-54,459.95-21,559.45

Finding the Fourth Proportional to 39,462.78, 54,459.95 and 21,559.45

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Solution

The fourth proportional to 39,462.78, 54,459.95 and 21,559.45 is: 29,752.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,462.78 : 54,459.95 = 21,559.45 : x
  2. Step 2: Convert to fraction form
    39,462.78/54,459.95 = 21,559.45/x
  3. Step 3: Cross multiply
    39,462.78x = 54,459.95 × 21,559.45
  4. Step 4: Simplify right side
    39,462.78x = 1,174,126,569.03
  5. Step 5: Solve for x
    x = 1,174,126,569.03/39,462.78
  6. Step 6: Final answer
    x = 29,752.76

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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.