Home / 10,456.36-15,669.80-5,778.50

Finding the Fourth Proportional to 10,456.36, 15,669.80 and 5,778.50

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Solution

The fourth proportional to 10,456.36, 15,669.80 and 5,778.50 is: 8,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,456.36 : 15,669.80 = 5,778.50 : x
  2. Step 2: Convert to fraction form
    10,456.36/15,669.80 = 5,778.50/x
  3. Step 3: Cross multiply
    10,456.36x = 15,669.80 × 5,778.50
  4. Step 4: Simplify right side
    10,456.36x = 90,547,939.30
  5. Step 5: Solve for x
    x = 90,547,939.30/10,456.36
  6. Step 6: Final answer
    x = 8,659.60

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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.