Home / 21,261.46-29,338.95-11,830.54

Finding the Fourth Proportional to 21,261.46, 29,338.95 and 11,830.54

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Solution

The fourth proportional to 21,261.46, 29,338.95 and 11,830.54 is: 16,325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.46 : 29,338.95 = 11,830.54 : x
  2. Step 2: Convert to fraction form
    21,261.46/29,338.95 = 11,830.54/x
  3. Step 3: Cross multiply
    21,261.46x = 29,338.95 × 11,830.54
  4. Step 4: Simplify right side
    21,261.46x = 347,095,621.53
  5. Step 5: Solve for x
    x = 347,095,621.53/21,261.46
  6. Step 6: Final answer
    x = 16,325.11

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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.