Home / 19,869.30-27,420.12-10,916.98

Finding the Fourth Proportional to 19,869.30, 27,420.12 and 10,916.98

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Solution

The fourth proportional to 19,869.30, 27,420.12 and 10,916.98 is: 15,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.30 : 27,420.12 = 10,916.98 : x
  2. Step 2: Convert to fraction form
    19,869.30/27,420.12 = 10,916.98/x
  3. Step 3: Cross multiply
    19,869.30x = 27,420.12 × 10,916.98
  4. Step 4: Simplify right side
    19,869.30x = 299,344,833.09
  5. Step 5: Solve for x
    x = 299,344,833.09/19,869.30
  6. Step 6: Final answer
    x = 15,065.70

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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.