Home / 15,150.95-20,902.90-8,774.06

Finding the Fourth Proportional to 15,150.95, 20,902.90 and 8,774.06

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Solution

The fourth proportional to 15,150.95, 20,902.90 and 8,774.06 is: 12,105.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.95 : 20,902.90 = 8,774.06 : x
  2. Step 2: Convert to fraction form
    15,150.95/20,902.90 = 8,774.06/x
  3. Step 3: Cross multiply
    15,150.95x = 20,902.90 × 8,774.06
  4. Step 4: Simplify right side
    15,150.95x = 183,403,298.77
  5. Step 5: Solve for x
    x = 183,403,298.77/15,150.95
  6. Step 6: Final answer
    x = 12,105.07

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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.