Home / 28,081.61-38,752.70-15,334.91

Finding the Fourth Proportional to 28,081.61, 38,752.70 and 15,334.91

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Solution

The fourth proportional to 28,081.61, 38,752.70 and 15,334.91 is: 21,162.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.61 : 38,752.70 = 15,334.91 : x
  2. Step 2: Convert to fraction form
    28,081.61/38,752.70 = 15,334.91/x
  3. Step 3: Cross multiply
    28,081.61x = 38,752.70 × 15,334.91
  4. Step 4: Simplify right side
    28,081.61x = 594,268,896.32
  5. Step 5: Solve for x
    x = 594,268,896.32/28,081.61
  6. Step 6: Final answer
    x = 21,162.21

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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.