Home / 15,878.86-23,821.72-4,784.70

Finding the Fourth Proportional to 15,878.86, 23,821.72 and 4,784.70

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Solution

The fourth proportional to 15,878.86, 23,821.72 and 4,784.70 is: 7,178.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878.86 : 23,821.72 = 4,784.70 : x
  2. Step 2: Convert to fraction form
    15,878.86/23,821.72 = 4,784.70/x
  3. Step 3: Cross multiply
    15,878.86x = 23,821.72 × 4,784.70
  4. Step 4: Simplify right side
    15,878.86x = 113,979,783.68
  5. Step 5: Solve for x
    x = 113,979,783.68/15,878.86
  6. Step 6: Final answer
    x = 7,178.08

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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.