Home / 28,061.40-38,724.95-15,314.69

Finding the Fourth Proportional to 28,061.40, 38,724.95 and 15,314.69

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Solution

The fourth proportional to 28,061.40, 38,724.95 and 15,314.69 is: 21,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.40 : 38,724.95 = 15,314.69 : x
  2. Step 2: Convert to fraction form
    28,061.40/38,724.95 = 15,314.69/x
  3. Step 3: Cross multiply
    28,061.40x = 38,724.95 × 15,314.69
  4. Step 4: Simplify right side
    28,061.40x = 593,060,334.32
  5. Step 5: Solve for x
    x = 593,060,334.32/28,061.40
  6. Step 6: Final answer
    x = 21,134.38

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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.