Home / 12,655.23-18,972.04-8,945.79

Finding the Fourth Proportional to 12,655.23, 18,972.04 and 8,945.79

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Solution

The fourth proportional to 12,655.23, 18,972.04 and 8,945.79 is: 13,411.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.23 : 18,972.04 = 8,945.79 : x
  2. Step 2: Convert to fraction form
    12,655.23/18,972.04 = 8,945.79/x
  3. Step 3: Cross multiply
    12,655.23x = 18,972.04 × 8,945.79
  4. Step 4: Simplify right side
    12,655.23x = 169,719,885.71
  5. Step 5: Solve for x
    x = 169,719,885.71/12,655.23
  6. Step 6: Final answer
    x = 13,411.05

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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.