Home / 39,235.95-54,144.42-21,330.50

Finding the Fourth Proportional to 39,235.95, 54,144.42 and 21,330.50

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Solution

The fourth proportional to 39,235.95, 54,144.42 and 21,330.50 is: 29,435.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.95 : 54,144.42 = 21,330.50 : x
  2. Step 2: Convert to fraction form
    39,235.95/54,144.42 = 21,330.50/x
  3. Step 3: Cross multiply
    39,235.95x = 54,144.42 × 21,330.50
  4. Step 4: Simplify right side
    39,235.95x = 1,154,927,280.09
  5. Step 5: Solve for x
    x = 1,154,927,280.09/39,235.95
  6. Step 6: Final answer
    x = 29,435.44

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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.