Home / 15,145.93-20,902.52-8,774.24

Finding the Fourth Proportional to 15,145.93, 20,902.52 and 8,774.24

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Solution

The fourth proportional to 15,145.93, 20,902.52 and 8,774.24 is: 12,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.93 : 20,902.52 = 8,774.24 : x
  2. Step 2: Convert to fraction form
    15,145.93/20,902.52 = 8,774.24/x
  3. Step 3: Cross multiply
    15,145.93x = 20,902.52 × 8,774.24
  4. Step 4: Simplify right side
    15,145.93x = 183,403,578.70
  5. Step 5: Solve for x
    x = 183,403,578.70/15,145.93
  6. Step 6: Final answer
    x = 12,109.10

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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.