Home / 15,122.32-20,788.06-13,512.08

Finding the Fourth Proportional to 15,122.32, 20,788.06 and 13,512.08

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Solution

The fourth proportional to 15,122.32, 20,788.06 and 13,512.08 is: 18,574.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.32 : 20,788.06 = 13,512.08 : x
  2. Step 2: Convert to fraction form
    15,122.32/20,788.06 = 13,512.08/x
  3. Step 3: Cross multiply
    15,122.32x = 20,788.06 × 13,512.08
  4. Step 4: Simplify right side
    15,122.32x = 280,889,929.76
  5. Step 5: Solve for x
    x = 280,889,929.76/15,122.32
  6. Step 6: Final answer
    x = 18,574.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.