Home / 28,060.97-38,724.05-15,485.63

Finding the Fourth Proportional to 28,060.97, 38,724.05 and 15,485.63

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Solution

The fourth proportional to 28,060.97, 38,724.05 and 15,485.63 is: 21,370.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,060.97 : 38,724.05 = 15,485.63 : x
  2. Step 2: Convert to fraction form
    28,060.97/38,724.05 = 15,485.63/x
  3. Step 3: Cross multiply
    28,060.97x = 38,724.05 × 15,485.63
  4. Step 4: Simplify right side
    28,060.97x = 599,666,155.50
  5. Step 5: Solve for x
    x = 599,666,155.50/28,060.97
  6. Step 6: Final answer
    x = 21,370.12

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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.