Home / 14,578.02-20,117.67-8,290.78

Finding the Fourth Proportional to 14,578.02, 20,117.67 and 8,290.78

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Solution

The fourth proportional to 14,578.02, 20,117.67 and 8,290.78 is: 11,441.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,578.02 : 20,117.67 = 8,290.78 : x
  2. Step 2: Convert to fraction form
    14,578.02/20,117.67 = 8,290.78/x
  3. Step 3: Cross multiply
    14,578.02x = 20,117.67 × 8,290.78
  4. Step 4: Simplify right side
    14,578.02x = 166,791,176.08
  5. Step 5: Solve for x
    x = 166,791,176.08/14,578.02
  6. Step 6: Final answer
    x = 11,441.28

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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.