Home / 28,322.19-39,085.62-15,575.90

Finding the Fourth Proportional to 28,322.19, 39,085.62 and 15,575.90

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Solution

The fourth proportional to 28,322.19, 39,085.62 and 15,575.90 is: 21,495.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,322.19 : 39,085.62 = 15,575.90 : x
  2. Step 2: Convert to fraction form
    28,322.19/39,085.62 = 15,575.90/x
  3. Step 3: Cross multiply
    28,322.19x = 39,085.62 × 15,575.90
  4. Step 4: Simplify right side
    28,322.19x = 608,793,708.56
  5. Step 5: Solve for x
    x = 608,793,708.56/28,322.19
  6. Step 6: Final answer
    x = 21,495.29

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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.