Home / 15,114.24-20,828.16-12,314.88

Finding the Fourth Proportional to 15,114.24, 20,828.16 and 12,314.88

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Solution

The fourth proportional to 15,114.24, 20,828.16 and 12,314.88 is: 16,970.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.24 : 20,828.16 = 12,314.88 : x
  2. Step 2: Convert to fraction form
    15,114.24/20,828.16 = 12,314.88/x
  3. Step 3: Cross multiply
    15,114.24x = 20,828.16 × 12,314.88
  4. Step 4: Simplify right side
    15,114.24x = 256,496,291.02
  5. Step 5: Solve for x
    x = 256,496,291.02/15,114.24
  6. Step 6: Final answer
    x = 16,970.51

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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.