Home / 18,721.65-28,068.61-8,849.40

Finding the Fourth Proportional to 18,721.65, 28,068.61 and 8,849.40

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Solution

The fourth proportional to 18,721.65, 28,068.61 and 8,849.40 is: 13,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.65 : 28,068.61 = 8,849.40 : x
  2. Step 2: Convert to fraction form
    18,721.65/28,068.61 = 8,849.40/x
  3. Step 3: Cross multiply
    18,721.65x = 28,068.61 × 8,849.40
  4. Step 4: Simplify right side
    18,721.65x = 248,390,357.33
  5. Step 5: Solve for x
    x = 248,390,357.33/18,721.65
  6. Step 6: Final answer
    x = 13,267.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.