Home / 19,869.67-27,420.13-10,916.87

Finding the Fourth Proportional to 19,869.67, 27,420.13 and 10,916.87

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Solution

The fourth proportional to 19,869.67, 27,420.13 and 10,916.87 is: 15,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.67 : 27,420.13 = 10,916.87 : x
  2. Step 2: Convert to fraction form
    19,869.67/27,420.13 = 10,916.87/x
  3. Step 3: Cross multiply
    19,869.67x = 27,420.13 × 10,916.87
  4. Step 4: Simplify right side
    19,869.67x = 299,341,994.59
  5. Step 5: Solve for x
    x = 299,341,994.59/19,869.67
  6. Step 6: Final answer
    x = 15,065.27

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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.