Home / 28,478.04-42,721.16-8,758.26

Finding the Fourth Proportional to 28,478.04, 42,721.16 and 8,758.26

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Solution

The fourth proportional to 28,478.04, 42,721.16 and 8,758.26 is: 13,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.04 : 42,721.16 = 8,758.26 : x
  2. Step 2: Convert to fraction form
    28,478.04/42,721.16 = 8,758.26/x
  3. Step 3: Cross multiply
    28,478.04x = 42,721.16 × 8,758.26
  4. Step 4: Simplify right side
    28,478.04x = 374,163,026.78
  5. Step 5: Solve for x
    x = 374,163,026.78/28,478.04
  6. Step 6: Final answer
    x = 13,138.65

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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.