Home / 38,760.78-53,490.44-21,768.71

Finding the Fourth Proportional to 38,760.78, 53,490.44 and 21,768.71

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Solution

The fourth proportional to 38,760.78, 53,490.44 and 21,768.71 is: 30,041.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,760.78 : 53,490.44 = 21,768.71 : x
  2. Step 2: Convert to fraction form
    38,760.78/53,490.44 = 21,768.71/x
  3. Step 3: Cross multiply
    38,760.78x = 53,490.44 × 21,768.71
  4. Step 4: Simplify right side
    38,760.78x = 1,164,417,663.10
  5. Step 5: Solve for x
    x = 1,164,417,663.10/38,760.78
  6. Step 6: Final answer
    x = 30,041.13

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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.