Home / 13,612.77-20,421.56-6,217.98

Finding the Fourth Proportional to 13,612.77, 20,421.56 and 6,217.98

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Solution

The fourth proportional to 13,612.77, 20,421.56 and 6,217.98 is: 9,328.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.77 : 20,421.56 = 6,217.98 : x
  2. Step 2: Convert to fraction form
    13,612.77/20,421.56 = 6,217.98/x
  3. Step 3: Cross multiply
    13,612.77x = 20,421.56 × 6,217.98
  4. Step 4: Simplify right side
    13,612.77x = 126,980,851.65
  5. Step 5: Solve for x
    x = 126,980,851.65/13,612.77
  6. Step 6: Final answer
    x = 9,328.07

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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.