Home / 31,280.74-43,186.18-19,360.06

Finding the Fourth Proportional to 31,280.74, 43,186.18 and 19,360.06

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Solution

The fourth proportional to 31,280.74, 43,186.18 and 19,360.06 is: 26,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,280.74 : 43,186.18 = 19,360.06 : x
  2. Step 2: Convert to fraction form
    31,280.74/43,186.18 = 19,360.06/x
  3. Step 3: Cross multiply
    31,280.74x = 43,186.18 × 19,360.06
  4. Step 4: Simplify right side
    31,280.74x = 836,087,035.97
  5. Step 5: Solve for x
    x = 836,087,035.97/31,280.74
  6. Step 6: Final answer
    x = 26,728.49

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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.