Home / 28,015.68-38,680.56-17,421.60

Finding the Fourth Proportional to 28,015.68, 38,680.56 and 17,421.60

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Solution

The fourth proportional to 28,015.68, 38,680.56 and 17,421.60 is: 24,053.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.68 : 38,680.56 = 17,421.60 : x
  2. Step 2: Convert to fraction form
    28,015.68/38,680.56 = 17,421.60/x
  3. Step 3: Cross multiply
    28,015.68x = 38,680.56 × 17,421.60
  4. Step 4: Simplify right side
    28,015.68x = 673,877,244.10
  5. Step 5: Solve for x
    x = 673,877,244.10/28,015.68
  6. Step 6: Final answer
    x = 24,053.57

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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.