Home / 28,035.65-38,689.07-15,460.40

Finding the Fourth Proportional to 28,035.65, 38,689.07 and 15,460.40

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Solution

The fourth proportional to 28,035.65, 38,689.07 and 15,460.40 is: 21,335.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.65 : 38,689.07 = 15,460.40 : x
  2. Step 2: Convert to fraction form
    28,035.65/38,689.07 = 15,460.40/x
  3. Step 3: Cross multiply
    28,035.65x = 38,689.07 × 15,460.40
  4. Step 4: Simplify right side
    28,035.65x = 598,148,705.74
  5. Step 5: Solve for x
    x = 598,148,705.74/28,035.65
  6. Step 6: Final answer
    x = 21,335.29

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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.