Home / 20,541.78-28,347.60-11,110.32

Finding the Fourth Proportional to 20,541.78, 28,347.60 and 11,110.32

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Solution

The fourth proportional to 20,541.78, 28,347.60 and 11,110.32 is: 15,332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.78 : 28,347.60 = 11,110.32 : x
  2. Step 2: Convert to fraction form
    20,541.78/28,347.60 = 11,110.32/x
  3. Step 3: Cross multiply
    20,541.78x = 28,347.60 × 11,110.32
  4. Step 4: Simplify right side
    20,541.78x = 314,950,907.23
  5. Step 5: Solve for x
    x = 314,950,907.23/20,541.78
  6. Step 6: Final answer
    x = 15,332.21

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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.