Home / 18,972.93-26,193.12-11,421.12

Finding the Fourth Proportional to 18,972.93, 26,193.12 and 11,421.12

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Solution

The fourth proportional to 18,972.93, 26,193.12 and 11,421.12 is: 15,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.93 : 26,193.12 = 11,421.12 : x
  2. Step 2: Convert to fraction form
    18,972.93/26,193.12 = 11,421.12/x
  3. Step 3: Cross multiply
    18,972.93x = 26,193.12 × 11,421.12
  4. Step 4: Simplify right side
    18,972.93x = 299,154,739.00
  5. Step 5: Solve for x
    x = 299,154,739.00/18,972.93
  6. Step 6: Final answer
    x = 15,767.45

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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.