Home / 15,455.34-21,328.74-9,167.76

Finding the Fourth Proportional to 15,455.34, 21,328.74 and 9,167.76

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Solution

The fourth proportional to 15,455.34, 21,328.74 and 9,167.76 is: 12,651.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.34 : 21,328.74 = 9,167.76 : x
  2. Step 2: Convert to fraction form
    15,455.34/21,328.74 = 9,167.76/x
  3. Step 3: Cross multiply
    15,455.34x = 21,328.74 × 9,167.76
  4. Step 4: Simplify right side
    15,455.34x = 195,536,769.42
  5. Step 5: Solve for x
    x = 195,536,769.42/15,455.34
  6. Step 6: Final answer
    x = 12,651.73

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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.