Home / 14,720.50-20,315.19-8,347.69

Finding the Fourth Proportional to 14,720.50, 20,315.19 and 8,347.69

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Solution

The fourth proportional to 14,720.50, 20,315.19 and 8,347.69 is: 11,520.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,720.50 : 20,315.19 = 8,347.69 : x
  2. Step 2: Convert to fraction form
    14,720.50/20,315.19 = 8,347.69/x
  3. Step 3: Cross multiply
    14,720.50x = 20,315.19 × 8,347.69
  4. Step 4: Simplify right side
    14,720.50x = 169,584,908.41
  5. Step 5: Solve for x
    x = 169,584,908.41/14,720.50
  6. Step 6: Final answer
    x = 11,520.32

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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.