Home / 84,571.48-126,856.86-21,392.20

Finding the Fourth Proportional to 84,571.48, 126,856.86 and 21,392.20

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Solution

The fourth proportional to 84,571.48, 126,856.86 and 21,392.20 is: 32,088.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,571.48 : 126,856.86 = 21,392.20 : x
  2. Step 2: Convert to fraction form
    84,571.48/126,856.86 = 21,392.20/x
  3. Step 3: Cross multiply
    84,571.48x = 126,856.86 × 21,392.20
  4. Step 4: Simplify right side
    84,571.48x = 2,713,747,320.49
  5. Step 5: Solve for x
    x = 2,713,747,320.49/84,571.48
  6. Step 6: Final answer
    x = 32,088.21

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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.