Home / 27,803.32-38,370.21-15,870.50

Finding the Fourth Proportional to 27,803.32, 38,370.21 and 15,870.50

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Solution

The fourth proportional to 27,803.32, 38,370.21 and 15,870.50 is: 21,902.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,803.32 : 38,370.21 = 15,870.50 : x
  2. Step 2: Convert to fraction form
    27,803.32/38,370.21 = 15,870.50/x
  3. Step 3: Cross multiply
    27,803.32x = 38,370.21 × 15,870.50
  4. Step 4: Simplify right side
    27,803.32x = 608,954,310.33
  5. Step 5: Solve for x
    x = 608,954,310.33/27,803.32
  6. Step 6: Final answer
    x = 21,902.22

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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.