Home / 28,065.27-38,730.06-15,490.02

Finding the Fourth Proportional to 28,065.27, 38,730.06 and 15,490.02

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Solution

The fourth proportional to 28,065.27, 38,730.06 and 15,490.02 is: 21,376.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.27 : 38,730.06 = 15,490.02 : x
  2. Step 2: Convert to fraction form
    28,065.27/38,730.06 = 15,490.02/x
  3. Step 3: Cross multiply
    28,065.27x = 38,730.06 × 15,490.02
  4. Step 4: Simplify right side
    28,065.27x = 599,929,404.00
  5. Step 5: Solve for x
    x = 599,929,404.00/28,065.27
  6. Step 6: Final answer
    x = 21,376.22

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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.