Home / 12,916.50-19,343.98-8,971.69

Finding the Fourth Proportional to 12,916.50, 19,343.98 and 8,971.69

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Solution

The fourth proportional to 12,916.50, 19,343.98 and 8,971.69 is: 13,436.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.50 : 19,343.98 = 8,971.69 : x
  2. Step 2: Convert to fraction form
    12,916.50/19,343.98 = 8,971.69/x
  3. Step 3: Cross multiply
    12,916.50x = 19,343.98 × 8,971.69
  4. Step 4: Simplify right side
    12,916.50x = 173,548,191.93
  5. Step 5: Solve for x
    x = 173,548,191.93/12,916.50
  6. Step 6: Final answer
    x = 13,436.16

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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.