Home / 31,448.36-43,418.13-21,642.50

Finding the Fourth Proportional to 31,448.36, 43,418.13 and 21,642.50

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Solution

The fourth proportional to 31,448.36, 43,418.13 and 21,642.50 is: 29,880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,448.36 : 43,418.13 = 21,642.50 : x
  2. Step 2: Convert to fraction form
    31,448.36/43,418.13 = 21,642.50/x
  3. Step 3: Cross multiply
    31,448.36x = 43,418.13 × 21,642.50
  4. Step 4: Simplify right side
    31,448.36x = 939,676,878.53
  5. Step 5: Solve for x
    x = 939,676,878.53/31,448.36
  6. Step 6: Final answer
    x = 29,880.00

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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.