Home / 39,479.85-54,482.09-21,574.98

Finding the Fourth Proportional to 39,479.85, 54,482.09 and 21,574.98

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Solution

The fourth proportional to 39,479.85, 54,482.09 and 21,574.98 is: 29,773.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,479.85 : 54,482.09 = 21,574.98 : x
  2. Step 2: Convert to fraction form
    39,479.85/54,482.09 = 21,574.98/x
  3. Step 3: Cross multiply
    39,479.85x = 54,482.09 × 21,574.98
  4. Step 4: Simplify right side
    39,479.85x = 1,175,449,894.23
  5. Step 5: Solve for x
    x = 1,175,449,894.23/39,479.85
  6. Step 6: Final answer
    x = 29,773.41

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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.