Home / 12,888.64-19,341.60-8,274.88

Finding the Fourth Proportional to 12,888.64, 19,341.60 and 8,274.88

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Solution

The fourth proportional to 12,888.64, 19,341.60 and 8,274.88 is: 12,417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.64 : 19,341.60 = 8,274.88 : x
  2. Step 2: Convert to fraction form
    12,888.64/19,341.60 = 8,274.88/x
  3. Step 3: Cross multiply
    12,888.64x = 19,341.60 × 8,274.88
  4. Step 4: Simplify right side
    12,888.64x = 160,049,419.01
  5. Step 5: Solve for x
    x = 160,049,419.01/12,888.64
  6. Step 6: Final answer
    x = 12,417.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.