Home / 31,385.88-43,312.80-17,239.04

Finding the Fourth Proportional to 31,385.88, 43,312.80 and 17,239.04

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Solution

The fourth proportional to 31,385.88, 43,312.80 and 17,239.04 is: 23,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,385.88 : 43,312.80 = 17,239.04 : x
  2. Step 2: Convert to fraction form
    31,385.88/43,312.80 = 17,239.04/x
  3. Step 3: Cross multiply
    31,385.88x = 43,312.80 × 17,239.04
  4. Step 4: Simplify right side
    31,385.88x = 746,671,091.71
  5. Step 5: Solve for x
    x = 746,671,091.71/31,385.88
  6. Step 6: Final answer
    x = 23,790.03

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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.