Home / 17,929.95-26,908.85-12,421.89

Finding the Fourth Proportional to 17,929.95, 26,908.85 and 12,421.89

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Solution

The fourth proportional to 17,929.95, 26,908.85 and 12,421.89 is: 18,642.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,929.95 : 26,908.85 = 12,421.89 : x
  2. Step 2: Convert to fraction form
    17,929.95/26,908.85 = 12,421.89/x
  3. Step 3: Cross multiply
    17,929.95x = 26,908.85 × 12,421.89
  4. Step 4: Simplify right side
    17,929.95x = 334,258,712.62
  5. Step 5: Solve for x
    x = 334,258,712.62/17,929.95
  6. Step 6: Final answer
    x = 18,642.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.