Home / 39,715.84-54,807.44-21,810.68

Finding the Fourth Proportional to 39,715.84, 54,807.44 and 21,810.68

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Solution

The fourth proportional to 39,715.84, 54,807.44 and 21,810.68 is: 30,098.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,715.84 : 54,807.44 = 21,810.68 : x
  2. Step 2: Convert to fraction form
    39,715.84/54,807.44 = 21,810.68/x
  3. Step 3: Cross multiply
    39,715.84x = 54,807.44 × 21,810.68
  4. Step 4: Simplify right side
    39,715.84x = 1,195,387,535.46
  5. Step 5: Solve for x
    x = 1,195,387,535.46/39,715.84
  6. Step 6: Final answer
    x = 30,098.51

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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.