Home / 18,929.93-26,124.39-10,972.89

Finding the Fourth Proportional to 18,929.93, 26,124.39 and 10,972.89

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Solution

The fourth proportional to 18,929.93, 26,124.39 and 10,972.89 is: 15,143.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.93 : 26,124.39 = 10,972.89 : x
  2. Step 2: Convert to fraction form
    18,929.93/26,124.39 = 10,972.89/x
  3. Step 3: Cross multiply
    18,929.93x = 26,124.39 × 10,972.89
  4. Step 4: Simplify right side
    18,929.93x = 286,660,057.79
  5. Step 5: Solve for x
    x = 286,660,057.79/18,929.93
  6. Step 6: Final answer
    x = 15,143.22

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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.