Home / 39,809.12-54,935.28-21,903.98

Finding the Fourth Proportional to 39,809.12, 54,935.28 and 21,903.98

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Solution

The fourth proportional to 39,809.12, 54,935.28 and 21,903.98 is: 30,226.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,809.12 : 54,935.28 = 21,903.98 : x
  2. Step 2: Convert to fraction form
    39,809.12/54,935.28 = 21,903.98/x
  3. Step 3: Cross multiply
    39,809.12x = 54,935.28 × 21,903.98
  4. Step 4: Simplify right side
    39,809.12x = 1,203,301,274.41
  5. Step 5: Solve for x
    x = 1,203,301,274.41/39,809.12
  6. Step 6: Final answer
    x = 30,226.77

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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.