Home / 18,780.93-28,133.73-8,929.71

Finding the Fourth Proportional to 18,780.93, 28,133.73 and 8,929.71

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Solution

The fourth proportional to 18,780.93, 28,133.73 and 8,929.71 is: 13,376.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.93 : 28,133.73 = 8,929.71 : x
  2. Step 2: Convert to fraction form
    18,780.93/28,133.73 = 8,929.71/x
  3. Step 3: Cross multiply
    18,780.93x = 28,133.73 × 8,929.71
  4. Step 4: Simplify right side
    18,780.93x = 251,226,050.12
  5. Step 5: Solve for x
    x = 251,226,050.12/18,780.93
  6. Step 6: Final answer
    x = 13,376.66

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1.5x scale

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.