Home / 28,113.76-38,794.08-15,536.80

Finding the Fourth Proportional to 28,113.76, 38,794.08 and 15,536.80

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Solution

The fourth proportional to 28,113.76, 38,794.08 and 15,536.80 is: 21,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.76 : 38,794.08 = 15,536.80 : x
  2. Step 2: Convert to fraction form
    28,113.76/38,794.08 = 15,536.80/x
  3. Step 3: Cross multiply
    28,113.76x = 38,794.08 × 15,536.80
  4. Step 4: Simplify right side
    28,113.76x = 602,735,862.14
  5. Step 5: Solve for x
    x = 602,735,862.14/28,113.76
  6. Step 6: Final answer
    x = 21,439.18

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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.