Home / 39,397.04-54,366.18-21,491.72

Finding the Fourth Proportional to 39,397.04, 54,366.18 and 21,491.72

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Solution

The fourth proportional to 39,397.04, 54,366.18 and 21,491.72 is: 29,657.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,397.04 : 54,366.18 = 21,491.72 : x
  2. Step 2: Convert to fraction form
    39,397.04/54,366.18 = 21,491.72/x
  3. Step 3: Cross multiply
    39,397.04x = 54,366.18 × 21,491.72
  4. Step 4: Simplify right side
    39,397.04x = 1,168,422,718.03
  5. Step 5: Solve for x
    x = 1,168,422,718.03/39,397.04
  6. Step 6: Final answer
    x = 29,657.63

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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.