Home / 19,868.76-27,419-10,916.04

Finding the Fourth Proportional to 19,868.76, 27,419 and 10,916.04

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Solution

The fourth proportional to 19,868.76, 27,419 and 10,916.04 is: 15,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.76 : 27,419 = 10,916.04 : x
  2. Step 2: Convert to fraction form
    19,868.76/27,419 = 10,916.04/x
  3. Step 3: Cross multiply
    19,868.76x = 27,419 × 10,916.04
  4. Step 4: Simplify right side
    19,868.76x = 299,306,900.76
  5. Step 5: Solve for x
    x = 299,306,900.76/19,868.76
  6. Step 6: Final answer
    x = 15,064.20

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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.