Home / 15,143.64-20,888.49-9,772.93

Finding the Fourth Proportional to 15,143.64, 20,888.49 and 9,772.93

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Solution

The fourth proportional to 15,143.64, 20,888.49 and 9,772.93 is: 13,480.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.64 : 20,888.49 = 9,772.93 : x
  2. Step 2: Convert to fraction form
    15,143.64/20,888.49 = 9,772.93/x
  3. Step 3: Cross multiply
    15,143.64x = 20,888.49 × 9,772.93
  4. Step 4: Simplify right side
    15,143.64x = 204,141,750.58
  5. Step 5: Solve for x
    x = 204,141,750.58/15,143.64
  6. Step 6: Final answer
    x = 13,480.36

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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.