Home / 20,206.64-27,875.51-15,699.55

Finding the Fourth Proportional to 20,206.64, 27,875.51 and 15,699.55

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Solution

The fourth proportional to 20,206.64, 27,875.51 and 15,699.55 is: 21,657.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.64 : 27,875.51 = 15,699.55 : x
  2. Step 2: Convert to fraction form
    20,206.64/27,875.51 = 15,699.55/x
  3. Step 3: Cross multiply
    20,206.64x = 27,875.51 × 15,699.55
  4. Step 4: Simplify right side
    20,206.64x = 437,632,925.97
  5. Step 5: Solve for x
    x = 437,632,925.97/20,206.64
  6. Step 6: Final answer
    x = 21,657.87

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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.