Home / 28,694.36-39,587.12-21,158.52

Finding the Fourth Proportional to 28,694.36, 39,587.12 and 21,158.52

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Solution

The fourth proportional to 28,694.36, 39,587.12 and 21,158.52 is: 29,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,694.36 : 39,587.12 = 21,158.52 : x
  2. Step 2: Convert to fraction form
    28,694.36/39,587.12 = 21,158.52/x
  3. Step 3: Cross multiply
    28,694.36x = 39,587.12 × 21,158.52
  4. Step 4: Simplify right side
    28,694.36x = 837,604,870.26
  5. Step 5: Solve for x
    x = 837,604,870.26/28,694.36
  6. Step 6: Final answer
    x = 29,190.58

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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.