Home / 39,411.41-54,388.90-21,507.57

Finding the Fourth Proportional to 39,411.41, 54,388.90 and 21,507.57

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Solution

The fourth proportional to 39,411.41, 54,388.90 and 21,507.57 is: 29,681.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,411.41 : 54,388.90 = 21,507.57 : x
  2. Step 2: Convert to fraction form
    39,411.41/54,388.90 = 21,507.57/x
  3. Step 3: Cross multiply
    39,411.41x = 54,388.90 × 21,507.57
  4. Step 4: Simplify right side
    39,411.41x = 1,169,773,100.86
  5. Step 5: Solve for x
    x = 1,169,773,100.86/39,411.41
  6. Step 6: Final answer
    x = 29,681.08

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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.