Home / 12,561.52-18,848.40-5,168.20

Finding the Fourth Proportional to 12,561.52, 18,848.40 and 5,168.20

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Solution

The fourth proportional to 12,561.52, 18,848.40 and 5,168.20 is: 7,754.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.52 : 18,848.40 = 5,168.20 : x
  2. Step 2: Convert to fraction form
    12,561.52/18,848.40 = 5,168.20/x
  3. Step 3: Cross multiply
    12,561.52x = 18,848.40 × 5,168.20
  4. Step 4: Simplify right side
    12,561.52x = 97,412,300.88
  5. Step 5: Solve for x
    x = 97,412,300.88/12,561.52
  6. Step 6: Final answer
    x = 7,754.82

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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.