Home / 39,221.84-54,126.48-21,316.88

Finding the Fourth Proportional to 39,221.84, 54,126.48 and 21,316.88

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Solution

The fourth proportional to 39,221.84, 54,126.48 and 21,316.88 is: 29,417.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.84 : 54,126.48 = 21,316.88 : x
  2. Step 2: Convert to fraction form
    39,221.84/54,126.48 = 21,316.88/x
  3. Step 3: Cross multiply
    39,221.84x = 54,126.48 × 21,316.88
  4. Step 4: Simplify right side
    39,221.84x = 1,153,807,678.98
  5. Step 5: Solve for x
    x = 1,153,807,678.98/39,221.84
  6. Step 6: Final answer
    x = 29,417.48

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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.