Home / 14,689.22-20,271.46-8,720.91

Finding the Fourth Proportional to 14,689.22, 20,271.46 and 8,720.91

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Solution

The fourth proportional to 14,689.22, 20,271.46 and 8,720.91 is: 12,035.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689.22 : 20,271.46 = 8,720.91 : x
  2. Step 2: Convert to fraction form
    14,689.22/20,271.46 = 8,720.91/x
  3. Step 3: Cross multiply
    14,689.22x = 20,271.46 × 8,720.91
  4. Step 4: Simplify right side
    14,689.22x = 176,785,578.23
  5. Step 5: Solve for x
    x = 176,785,578.23/14,689.22
  6. Step 6: Final answer
    x = 12,035.06

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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.