Home / 42,726.15-64,083.70-13,143.33

Finding the Fourth Proportional to 42,726.15, 64,083.70 and 13,143.33

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Solution

The fourth proportional to 42,726.15, 64,083.70 and 13,143.33 is: 19,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,726.15 : 64,083.70 = 13,143.33 : x
  2. Step 2: Convert to fraction form
    42,726.15/64,083.70 = 13,143.33/x
  3. Step 3: Cross multiply
    42,726.15x = 64,083.70 × 13,143.33
  4. Step 4: Simplify right side
    42,726.15x = 842,273,151.00
  5. Step 5: Solve for x
    x = 842,273,151.00/42,726.15
  6. Step 6: Final answer
    x = 19,713.29

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1.5x scale

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.