Home / 12,660.30-18,985.59-5,642.46

Finding the Fourth Proportional to 12,660.30, 18,985.59 and 5,642.46

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Solution

The fourth proportional to 12,660.30, 18,985.59 and 5,642.46 is: 8,461.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.30 : 18,985.59 = 5,642.46 : x
  2. Step 2: Convert to fraction form
    12,660.30/18,985.59 = 5,642.46/x
  3. Step 3: Cross multiply
    12,660.30x = 18,985.59 × 5,642.46
  4. Step 4: Simplify right side
    12,660.30x = 107,125,432.15
  5. Step 5: Solve for x
    x = 107,125,432.15/12,660.30
  6. Step 6: Final answer
    x = 8,461.52

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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.