Home / 14,886.63-20,543.85-8,172.68

Finding the Fourth Proportional to 14,886.63, 20,543.85 and 8,172.68

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Solution

The fourth proportional to 14,886.63, 20,543.85 and 8,172.68 is: 11,278.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,886.63 : 20,543.85 = 8,172.68 : x
  2. Step 2: Convert to fraction form
    14,886.63/20,543.85 = 8,172.68/x
  3. Step 3: Cross multiply
    14,886.63x = 20,543.85 × 8,172.68
  4. Step 4: Simplify right side
    14,886.63x = 167,898,209.30
  5. Step 5: Solve for x
    x = 167,898,209.30/14,886.63
  6. Step 6: Final answer
    x = 11,278.46

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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.