Home / 19,864.80-29,816.40-10,015.20

Finding the Fourth Proportional to 19,864.80, 29,816.40 and 10,015.20

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Solution

The fourth proportional to 19,864.80, 29,816.40 and 10,015.20 is: 15,032.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.80 : 29,816.40 = 10,015.20 : x
  2. Step 2: Convert to fraction form
    19,864.80/29,816.40 = 10,015.20/x
  3. Step 3: Cross multiply
    19,864.80x = 29,816.40 × 10,015.20
  4. Step 4: Simplify right side
    19,864.80x = 298,617,209.28
  5. Step 5: Solve for x
    x = 298,617,209.28/19,864.80
  6. Step 6: Final answer
    x = 15,032.48

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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.