Home / 30,931.50-42,657.28-26,161.46

Finding the Fourth Proportional to 30,931.50, 42,657.28 and 26,161.46

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Solution

The fourth proportional to 30,931.50, 42,657.28 and 26,161.46 is: 36,078.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,931.50 : 42,657.28 = 26,161.46 : x
  2. Step 2: Convert to fraction form
    30,931.50/42,657.28 = 26,161.46/x
  3. Step 3: Cross multiply
    30,931.50x = 42,657.28 × 26,161.46
  4. Step 4: Simplify right side
    30,931.50x = 1,115,976,724.43
  5. Step 5: Solve for x
    x = 1,115,976,724.43/30,931.50
  6. Step 6: Final answer
    x = 36,078.97

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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.