Home / 39,360.66-54,316.32-21,455.28

Finding the Fourth Proportional to 39,360.66, 54,316.32 and 21,455.28

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Solution

The fourth proportional to 39,360.66, 54,316.32 and 21,455.28 is: 29,607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,360.66 : 54,316.32 = 21,455.28 : x
  2. Step 2: Convert to fraction form
    39,360.66/54,316.32 = 21,455.28/x
  3. Step 3: Cross multiply
    39,360.66x = 54,316.32 × 21,455.28
  4. Step 4: Simplify right side
    39,360.66x = 1,165,371,854.17
  5. Step 5: Solve for x
    x = 1,165,371,854.17/39,360.66
  6. Step 6: Final answer
    x = 29,607.53

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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.