Home / 20,088.02-27,721.66-11,135.72

Finding the Fourth Proportional to 20,088.02, 27,721.66 and 11,135.72

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Solution

The fourth proportional to 20,088.02, 27,721.66 and 11,135.72 is: 15,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.02 : 27,721.66 = 11,135.72 : x
  2. Step 2: Convert to fraction form
    20,088.02/27,721.66 = 11,135.72/x
  3. Step 3: Cross multiply
    20,088.02x = 27,721.66 × 11,135.72
  4. Step 4: Simplify right side
    20,088.02x = 308,700,643.70
  5. Step 5: Solve for x
    x = 308,700,643.70/20,088.02
  6. Step 6: Final answer
    x = 15,367.40

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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.