Home / 39,477.46-54,478.83-21,572.47

Finding the Fourth Proportional to 39,477.46, 54,478.83 and 21,572.47

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Solution

The fourth proportional to 39,477.46, 54,478.83 and 21,572.47 is: 29,769.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,477.46 : 54,478.83 = 21,572.47 : x
  2. Step 2: Convert to fraction form
    39,477.46/54,478.83 = 21,572.47/x
  3. Step 3: Cross multiply
    39,477.46x = 54,478.83 × 21,572.47
  4. Step 4: Simplify right side
    39,477.46x = 1,175,242,925.81
  5. Step 5: Solve for x
    x = 1,175,242,925.81/39,477.46
  6. Step 6: Final answer
    x = 29,769.97

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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.