Home / 15,742.12-21,719.21-8,935.01

Finding the Fourth Proportional to 15,742.12, 21,719.21 and 8,935.01

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Solution

The fourth proportional to 15,742.12, 21,719.21 and 8,935.01 is: 12,327.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.12 : 21,719.21 = 8,935.01 : x
  2. Step 2: Convert to fraction form
    15,742.12/21,719.21 = 8,935.01/x
  3. Step 3: Cross multiply
    15,742.12x = 21,719.21 × 8,935.01
  4. Step 4: Simplify right side
    15,742.12x = 194,061,358.54
  5. Step 5: Solve for x
    x = 194,061,358.54/15,742.12
  6. Step 6: Final answer
    x = 12,327.52

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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.