Home / 15,074.48-20,803.12-8,787.28

Finding the Fourth Proportional to 15,074.48, 20,803.12 and 8,787.28

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Solution

The fourth proportional to 15,074.48, 20,803.12 and 8,787.28 is: 12,126.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.48 : 20,803.12 = 8,787.28 : x
  2. Step 2: Convert to fraction form
    15,074.48/20,803.12 = 8,787.28/x
  3. Step 3: Cross multiply
    15,074.48x = 20,803.12 × 8,787.28
  4. Step 4: Simplify right side
    15,074.48x = 182,802,840.31
  5. Step 5: Solve for x
    x = 182,802,840.31/15,074.48
  6. Step 6: Final answer
    x = 12,126.64

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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.