Home / 28,081.02-38,751.78-15,505.74

Finding the Fourth Proportional to 28,081.02, 38,751.78 and 15,505.74

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Solution

The fourth proportional to 28,081.02, 38,751.78 and 15,505.74 is: 21,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.02 : 38,751.78 = 15,505.74 : x
  2. Step 2: Convert to fraction form
    28,081.02/38,751.78 = 15,505.74/x
  3. Step 3: Cross multiply
    28,081.02x = 38,751.78 × 15,505.74
  4. Step 4: Simplify right side
    28,081.02x = 600,875,025.22
  5. Step 5: Solve for x
    x = 600,875,025.22/28,081.02
  6. Step 6: Final answer
    x = 21,397.91

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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.