Home / 28,065.42-38,730.15-15,490.17

Finding the Fourth Proportional to 28,065.42, 38,730.15 and 15,490.17

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Solution

The fourth proportional to 28,065.42, 38,730.15 and 15,490.17 is: 21,376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.42 : 38,730.15 = 15,490.17 : x
  2. Step 2: Convert to fraction form
    28,065.42/38,730.15 = 15,490.17/x
  3. Step 3: Cross multiply
    28,065.42x = 38,730.15 × 15,490.17
  4. Step 4: Simplify right side
    28,065.42x = 599,936,607.63
  5. Step 5: Solve for x
    x = 599,936,607.63/28,065.42
  6. Step 6: Final answer
    x = 21,376.36

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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.