Home / 11,154.72-15,398.45-7,810.68

Finding the Fourth Proportional to 11,154.72, 15,398.45 and 7,810.68

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Solution

The fourth proportional to 11,154.72, 15,398.45 and 7,810.68 is: 10,782.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.72 : 15,398.45 = 7,810.68 : x
  2. Step 2: Convert to fraction form
    11,154.72/15,398.45 = 7,810.68/x
  3. Step 3: Cross multiply
    11,154.72x = 15,398.45 × 7,810.68
  4. Step 4: Simplify right side
    11,154.72x = 120,272,365.45
  5. Step 5: Solve for x
    x = 120,272,365.45/11,154.72
  6. Step 6: Final answer
    x = 10,782.19

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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.