Home / 39,325.79-54,270.07-21,420.95

Finding the Fourth Proportional to 39,325.79, 54,270.07 and 21,420.95

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Solution

The fourth proportional to 39,325.79, 54,270.07 and 21,420.95 is: 29,561.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,325.79 : 54,270.07 = 21,420.95 : x
  2. Step 2: Convert to fraction form
    39,325.79/54,270.07 = 21,420.95/x
  3. Step 3: Cross multiply
    39,325.79x = 54,270.07 × 21,420.95
  4. Step 4: Simplify right side
    39,325.79x = 1,162,516,131.06
  5. Step 5: Solve for x
    x = 1,162,516,131.06/39,325.79
  6. Step 6: Final answer
    x = 29,561.16

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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.