Home / 42,931-64,399.74-15,229

Finding the Fourth Proportional to 42,931, 64,399.74 and 15,229

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Solution

The fourth proportional to 42,931, 64,399.74 and 15,229 is: 22,844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,931 : 64,399.74 = 15,229 : x
  2. Step 2: Convert to fraction form
    42,931/64,399.74 = 15,229/x
  3. Step 3: Cross multiply
    42,931x = 64,399.74 × 15,229
  4. Step 4: Simplify right side
    42,931x = 980,743,640.46
  5. Step 5: Solve for x
    x = 980,743,640.46/42,931
  6. Step 6: Final answer
    x = 22,844.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.