Home / 39,477.68-54,478.88-21,572.36

Finding the Fourth Proportional to 39,477.68, 54,478.88 and 21,572.36

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Solution

The fourth proportional to 39,477.68, 54,478.88 and 21,572.36 is: 29,769.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,477.68 : 54,478.88 = 21,572.36 : x
  2. Step 2: Convert to fraction form
    39,477.68/54,478.88 = 21,572.36/x
  3. Step 3: Cross multiply
    39,477.68x = 54,478.88 × 21,572.36
  4. Step 4: Simplify right side
    39,477.68x = 1,175,237,916.69
  5. Step 5: Solve for x
    x = 1,175,237,916.69/39,477.68
  6. Step 6: Final answer
    x = 29,769.68

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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.