Home / 19,689.78-27,171.29-10,737.45

Finding the Fourth Proportional to 19,689.78, 27,171.29 and 10,737.45

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Solution

The fourth proportional to 19,689.78, 27,171.29 and 10,737.45 is: 14,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.78 : 27,171.29 = 10,737.45 : x
  2. Step 2: Convert to fraction form
    19,689.78/27,171.29 = 10,737.45/x
  3. Step 3: Cross multiply
    19,689.78x = 27,171.29 × 10,737.45
  4. Step 4: Simplify right side
    19,689.78x = 291,750,367.81
  5. Step 5: Solve for x
    x = 291,750,367.81/19,689.78
  6. Step 6: Final answer
    x = 14,817.35

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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.