Home / 31,018.68-42,820.65-19,092.24

Finding the Fourth Proportional to 31,018.68, 42,820.65 and 19,092.24

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Solution

The fourth proportional to 31,018.68, 42,820.65 and 19,092.24 is: 26,356.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,018.68 : 42,820.65 = 19,092.24 : x
  2. Step 2: Convert to fraction form
    31,018.68/42,820.65 = 19,092.24/x
  3. Step 3: Cross multiply
    31,018.68x = 42,820.65 × 19,092.24
  4. Step 4: Simplify right side
    31,018.68x = 817,542,126.76
  5. Step 5: Solve for x
    x = 817,542,126.76/31,018.68
  6. Step 6: Final answer
    x = 26,356.44

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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.