Home / 39,479.04-54,478.76-21,574.18

Finding the Fourth Proportional to 39,479.04, 54,478.76 and 21,574.18

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Solution

The fourth proportional to 39,479.04, 54,478.76 and 21,574.18 is: 29,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,479.04 : 54,478.76 = 21,574.18 : x
  2. Step 2: Convert to fraction form
    39,479.04/54,478.76 = 21,574.18/x
  3. Step 3: Cross multiply
    39,479.04x = 54,478.76 × 21,574.18
  4. Step 4: Simplify right side
    39,479.04x = 1,175,334,466.55
  5. Step 5: Solve for x
    x = 1,175,334,466.55/39,479.04
  6. Step 6: Final answer
    x = 29,771.10

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Half scale
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Double scale
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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.