Home / 28,500.71-42,755.65-8,779.26

Finding the Fourth Proportional to 28,500.71, 42,755.65 and 8,779.26

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Solution

The fourth proportional to 28,500.71, 42,755.65 and 8,779.26 is: 13,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.71 : 42,755.65 = 8,779.26 : x
  2. Step 2: Convert to fraction form
    28,500.71/42,755.65 = 8,779.26/x
  3. Step 3: Cross multiply
    28,500.71x = 42,755.65 × 8,779.26
  4. Step 4: Simplify right side
    28,500.71x = 375,362,967.82
  5. Step 5: Solve for x
    x = 375,362,967.82/28,500.71
  6. Step 6: Final answer
    x = 13,170.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.