Home / 40,018.18-55,159.23-28,380.28

Finding the Fourth Proportional to 40,018.18, 55,159.23 and 28,380.28

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Solution

The fourth proportional to 40,018.18, 55,159.23 and 28,380.28 is: 39,118.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,018.18 : 55,159.23 = 28,380.28 : x
  2. Step 2: Convert to fraction form
    40,018.18/55,159.23 = 28,380.28/x
  3. Step 3: Cross multiply
    40,018.18x = 55,159.23 × 28,380.28
  4. Step 4: Simplify right side
    40,018.18x = 1,565,434,391.98
  5. Step 5: Solve for x
    x = 1,565,434,391.98/40,018.18
  6. Step 6: Final answer
    x = 39,118.08

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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.