Home / 12,655.25-18,968.47-5,624.70

Finding the Fourth Proportional to 12,655.25, 18,968.47 and 5,624.70

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Solution

The fourth proportional to 12,655.25, 18,968.47 and 5,624.70 is: 8,430.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.25 : 18,968.47 = 5,624.70 : x
  2. Step 2: Convert to fraction form
    12,655.25/18,968.47 = 5,624.70/x
  3. Step 3: Cross multiply
    12,655.25x = 18,968.47 × 5,624.70
  4. Step 4: Simplify right side
    12,655.25x = 106,691,969.89
  5. Step 5: Solve for x
    x = 106,691,969.89/12,655.25
  6. Step 6: Final answer
    x = 8,430.65

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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.