Home / 12,988.28-17,916.69-7,682.07

Finding the Fourth Proportional to 12,988.28, 17,916.69 and 7,682.07

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Solution

The fourth proportional to 12,988.28, 17,916.69 and 7,682.07 is: 10,597.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.28 : 17,916.69 = 7,682.07 : x
  2. Step 2: Convert to fraction form
    12,988.28/17,916.69 = 7,682.07/x
  3. Step 3: Cross multiply
    12,988.28x = 17,916.69 × 7,682.07
  4. Step 4: Simplify right side
    12,988.28x = 137,637,362.74
  5. Step 5: Solve for x
    x = 137,637,362.74/12,988.28
  6. Step 6: Final answer
    x = 10,597.04

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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.