Home / 19,981.36-29,946.84-10,123.12

Finding the Fourth Proportional to 19,981.36, 29,946.84 and 10,123.12

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Solution

The fourth proportional to 19,981.36, 29,946.84 and 10,123.12 is: 15,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.36 : 29,946.84 = 10,123.12 : x
  2. Step 2: Convert to fraction form
    19,981.36/29,946.84 = 10,123.12/x
  3. Step 3: Cross multiply
    19,981.36x = 29,946.84 × 10,123.12
  4. Step 4: Simplify right side
    19,981.36x = 303,155,454.94
  5. Step 5: Solve for x
    x = 303,155,454.94/19,981.36
  6. Step 6: Final answer
    x = 15,171.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.