Home / 28,061.40-38,724.84-15,486.12

Finding the Fourth Proportional to 28,061.40, 38,724.84 and 15,486.12

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Solution

The fourth proportional to 28,061.40, 38,724.84 and 15,486.12 is: 21,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.40 : 38,724.84 = 15,486.12 : x
  2. Step 2: Convert to fraction form
    28,061.40/38,724.84 = 15,486.12/x
  3. Step 3: Cross multiply
    28,061.40x = 38,724.84 × 15,486.12
  4. Step 4: Simplify right side
    28,061.40x = 599,697,519.22
  5. Step 5: Solve for x
    x = 599,697,519.22/28,061.40
  6. Step 6: Final answer
    x = 21,370.91

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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.