Home / 28,254.31-38,989.62-15,507.19

Finding the Fourth Proportional to 28,254.31, 38,989.62 and 15,507.19

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Solution

The fourth proportional to 28,254.31, 38,989.62 and 15,507.19 is: 21,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.31 : 38,989.62 = 15,507.19 : x
  2. Step 2: Convert to fraction form
    28,254.31/38,989.62 = 15,507.19/x
  3. Step 3: Cross multiply
    28,254.31x = 38,989.62 × 15,507.19
  4. Step 4: Simplify right side
    28,254.31x = 604,619,445.37
  5. Step 5: Solve for x
    x = 604,619,445.37/28,254.31
  6. Step 6: Final answer
    x = 21,399.19

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Half scale
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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.