Home / 28,216.14-38,939.58-15,641.16

Finding the Fourth Proportional to 28,216.14, 38,939.58 and 15,641.16

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Solution

The fourth proportional to 28,216.14, 38,939.58 and 15,641.16 is: 21,585.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.14 : 38,939.58 = 15,641.16 : x
  2. Step 2: Convert to fraction form
    28,216.14/38,939.58 = 15,641.16/x
  3. Step 3: Cross multiply
    28,216.14x = 38,939.58 × 15,641.16
  4. Step 4: Simplify right side
    28,216.14x = 609,060,201.11
  5. Step 5: Solve for x
    x = 609,060,201.11/28,216.14
  6. Step 6: Final answer
    x = 21,585.53

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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.