Home / 10,212.04-15,387.52-8,403.72

Finding the Fourth Proportional to 10,212.04, 15,387.52 and 8,403.72

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Solution

The fourth proportional to 10,212.04, 15,387.52 and 8,403.72 is: 12,662.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.04 : 15,387.52 = 8,403.72 : x
  2. Step 2: Convert to fraction form
    10,212.04/15,387.52 = 8,403.72/x
  3. Step 3: Cross multiply
    10,212.04x = 15,387.52 × 8,403.72
  4. Step 4: Simplify right side
    10,212.04x = 129,312,409.57
  5. Step 5: Solve for x
    x = 129,312,409.57/10,212.04
  6. Step 6: Final answer
    x = 12,662.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.