Home / 19,869.12-27,419.42-10,916.64

Finding the Fourth Proportional to 19,869.12, 27,419.42 and 10,916.64

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Solution

The fourth proportional to 19,869.12, 27,419.42 and 10,916.64 is: 15,064.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.12 : 27,419.42 = 10,916.64 : x
  2. Step 2: Convert to fraction form
    19,869.12/27,419.42 = 10,916.64/x
  3. Step 3: Cross multiply
    19,869.12x = 27,419.42 × 10,916.64
  4. Step 4: Simplify right side
    19,869.12x = 299,327,937.15
  5. Step 5: Solve for x
    x = 299,327,937.15/19,869.12
  6. Step 6: Final answer
    x = 15,064.98

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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.