Home / 14,707.48-20,297.10-8,420.80

Finding the Fourth Proportional to 14,707.48, 20,297.10 and 8,420.80

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Solution

The fourth proportional to 14,707.48, 20,297.10 and 8,420.80 is: 11,621.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,707.48 : 20,297.10 = 8,420.80 : x
  2. Step 2: Convert to fraction form
    14,707.48/20,297.10 = 8,420.80/x
  3. Step 3: Cross multiply
    14,707.48x = 20,297.10 × 8,420.80
  4. Step 4: Simplify right side
    14,707.48x = 170,917,819.68
  5. Step 5: Solve for x
    x = 170,917,819.68/14,707.48
  6. Step 6: Final answer
    x = 11,621.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.