Home / 12,211.63-18,288.96-8,916.55

Finding the Fourth Proportional to 12,211.63, 18,288.96 and 8,916.55

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Solution

The fourth proportional to 12,211.63, 18,288.96 and 8,916.55 is: 13,354.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.63 : 18,288.96 = 8,916.55 : x
  2. Step 2: Convert to fraction form
    12,211.63/18,288.96 = 8,916.55/x
  3. Step 3: Cross multiply
    12,211.63x = 18,288.96 × 8,916.55
  4. Step 4: Simplify right side
    12,211.63x = 163,074,426.29
  5. Step 5: Solve for x
    x = 163,074,426.29/12,211.63
  6. Step 6: Final answer
    x = 13,354.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.