Home / 39,388.32-54,352.80-21,482.28

Finding the Fourth Proportional to 39,388.32, 54,352.80 and 21,482.28

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Solution

The fourth proportional to 39,388.32, 54,352.80 and 21,482.28 is: 29,643.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,388.32 : 54,352.80 = 21,482.28 : x
  2. Step 2: Convert to fraction form
    39,388.32/54,352.80 = 21,482.28/x
  3. Step 3: Cross multiply
    39,388.32x = 54,352.80 × 21,482.28
  4. Step 4: Simplify right side
    39,388.32x = 1,167,622,068.38
  5. Step 5: Solve for x
    x = 1,167,622,068.38/39,388.32
  6. Step 6: Final answer
    x = 29,643.87

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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.