Home / 39,394.71-54,364.86-21,490.11

Finding the Fourth Proportional to 39,394.71, 54,364.86 and 21,490.11

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Solution

The fourth proportional to 39,394.71, 54,364.86 and 21,490.11 is: 29,656.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,394.71 : 54,364.86 = 21,490.11 : x
  2. Step 2: Convert to fraction form
    39,394.71/54,364.86 = 21,490.11/x
  3. Step 3: Cross multiply
    39,394.71x = 54,364.86 × 21,490.11
  4. Step 4: Simplify right side
    39,394.71x = 1,168,306,821.53
  5. Step 5: Solve for x
    x = 1,168,306,821.53/39,394.71
  6. Step 6: Final answer
    x = 29,656.44

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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.