Home / 14,746.80-20,357.16-8,780.56

Finding the Fourth Proportional to 14,746.80, 20,357.16 and 8,780.56

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Solution

The fourth proportional to 14,746.80, 20,357.16 and 8,780.56 is: 12,121.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,746.80 : 20,357.16 = 8,780.56 : x
  2. Step 2: Convert to fraction form
    14,746.80/20,357.16 = 8,780.56/x
  3. Step 3: Cross multiply
    14,746.80x = 20,357.16 × 8,780.56
  4. Step 4: Simplify right side
    14,746.80x = 178,747,264.81
  5. Step 5: Solve for x
    x = 178,747,264.81/14,746.80
  6. Step 6: Final answer
    x = 12,121.09

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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.