Home / 15,510.80-21,384.92-11,268.02

Finding the Fourth Proportional to 15,510.80, 21,384.92 and 11,268.02

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Solution

The fourth proportional to 15,510.80, 21,384.92 and 11,268.02 is: 15,535.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.80 : 21,384.92 = 11,268.02 : x
  2. Step 2: Convert to fraction form
    15,510.80/21,384.92 = 11,268.02/x
  3. Step 3: Cross multiply
    15,510.80x = 21,384.92 × 11,268.02
  4. Step 4: Simplify right side
    15,510.80x = 240,965,542.99
  5. Step 5: Solve for x
    x = 240,965,542.99/15,510.80
  6. Step 6: Final answer
    x = 15,535.34

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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.