Home / 28,152.13-38,849.73-15,405.07

Finding the Fourth Proportional to 28,152.13, 38,849.73 and 15,405.07

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Solution

The fourth proportional to 28,152.13, 38,849.73 and 15,405.07 is: 21,258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.13 : 38,849.73 = 15,405.07 : x
  2. Step 2: Convert to fraction form
    28,152.13/38,849.73 = 15,405.07/x
  3. Step 3: Cross multiply
    28,152.13x = 38,849.73 × 15,405.07
  4. Step 4: Simplify right side
    28,152.13x = 598,482,810.13
  5. Step 5: Solve for x
    x = 598,482,810.13/28,152.13
  6. Step 6: Final answer
    x = 21,258.88

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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.