Home / 28,053.64-38,713.94-15,478.40

Finding the Fourth Proportional to 28,053.64, 38,713.94 and 15,478.40

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Solution

The fourth proportional to 28,053.64, 38,713.94 and 15,478.40 is: 21,360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.64 : 38,713.94 = 15,478.40 : x
  2. Step 2: Convert to fraction form
    28,053.64/38,713.94 = 15,478.40/x
  3. Step 3: Cross multiply
    28,053.64x = 38,713.94 × 15,478.40
  4. Step 4: Simplify right side
    28,053.64x = 599,229,848.90
  5. Step 5: Solve for x
    x = 599,229,848.90/28,053.64
  6. Step 6: Final answer
    x = 21,360.15

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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.