Home / 39,715.25-54,807.50-21,809.93

Finding the Fourth Proportional to 39,715.25, 54,807.50 and 21,809.93

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Solution

The fourth proportional to 39,715.25, 54,807.50 and 21,809.93 is: 30,097.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,715.25 : 54,807.50 = 21,809.93 : x
  2. Step 2: Convert to fraction form
    39,715.25/54,807.50 = 21,809.93/x
  3. Step 3: Cross multiply
    39,715.25x = 54,807.50 × 21,809.93
  4. Step 4: Simplify right side
    39,715.25x = 1,195,347,518.96
  5. Step 5: Solve for x
    x = 1,195,347,518.96/39,715.25
  6. Step 6: Final answer
    x = 30,097.95

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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.