Home / 28,507.08-39,339.58-15,761.12

Finding the Fourth Proportional to 28,507.08, 39,339.58 and 15,761.12

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Solution

The fourth proportional to 28,507.08, 39,339.58 and 15,761.12 is: 21,750.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.08 : 39,339.58 = 15,761.12 : x
  2. Step 2: Convert to fraction form
    28,507.08/39,339.58 = 15,761.12/x
  3. Step 3: Cross multiply
    28,507.08x = 39,339.58 × 15,761.12
  4. Step 4: Simplify right side
    28,507.08x = 620,035,841.13
  5. Step 5: Solve for x
    x = 620,035,841.13/28,507.08
  6. Step 6: Final answer
    x = 21,750.24

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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.