Home / 28,100.68-38,779.26-15,525.40

Finding the Fourth Proportional to 28,100.68, 38,779.26 and 15,525.40

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Solution

The fourth proportional to 28,100.68, 38,779.26 and 15,525.40 is: 21,425.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.68 : 38,779.26 = 15,525.40 : x
  2. Step 2: Convert to fraction form
    28,100.68/38,779.26 = 15,525.40/x
  3. Step 3: Cross multiply
    28,100.68x = 38,779.26 × 15,525.40
  4. Step 4: Simplify right side
    28,100.68x = 602,063,523.20
  5. Step 5: Solve for x
    x = 602,063,523.20/28,100.68
  6. Step 6: Final answer
    x = 21,425.23

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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.