Home / 39,221.99-54,126.35-21,316.99

Finding the Fourth Proportional to 39,221.99, 54,126.35 and 21,316.99

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Solution

The fourth proportional to 39,221.99, 54,126.35 and 21,316.99 is: 29,417.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.99 : 54,126.35 = 21,316.99 : x
  2. Step 2: Convert to fraction form
    39,221.99/54,126.35 = 21,316.99/x
  3. Step 3: Cross multiply
    39,221.99x = 54,126.35 × 21,316.99
  4. Step 4: Simplify right side
    39,221.99x = 1,153,810,755.10
  5. Step 5: Solve for x
    x = 1,153,810,755.10/39,221.99
  6. Step 6: Final answer
    x = 29,417.45

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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.