Home / 15,120.24-20,864.50-14,005.68

Finding the Fourth Proportional to 15,120.24, 20,864.50 and 14,005.68

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Solution

The fourth proportional to 15,120.24, 20,864.50 and 14,005.68 is: 19,326.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.24 : 20,864.50 = 14,005.68 : x
  2. Step 2: Convert to fraction form
    15,120.24/20,864.50 = 14,005.68/x
  3. Step 3: Cross multiply
    15,120.24x = 20,864.50 × 14,005.68
  4. Step 4: Simplify right side
    15,120.24x = 292,221,510.36
  5. Step 5: Solve for x
    x = 292,221,510.36/15,120.24
  6. Step 6: Final answer
    x = 19,326.51

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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.