Home / 12,470.93-18,706.40-8,319.05

Finding the Fourth Proportional to 12,470.93, 18,706.40 and 8,319.05

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Solution

The fourth proportional to 12,470.93, 18,706.40 and 8,319.05 is: 12,478.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470.93 : 18,706.40 = 8,319.05 : x
  2. Step 2: Convert to fraction form
    12,470.93/18,706.40 = 8,319.05/x
  3. Step 3: Cross multiply
    12,470.93x = 18,706.40 × 8,319.05
  4. Step 4: Simplify right side
    12,470.93x = 155,619,404.19
  5. Step 5: Solve for x
    x = 155,619,404.19/12,470.93
  6. Step 6: Final answer
    x = 12,478.58

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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.