Home / 28,383.36-39,178.12-18,312.08

Finding the Fourth Proportional to 28,383.36, 39,178.12 and 18,312.08

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Solution

The fourth proportional to 28,383.36, 39,178.12 and 18,312.08 is: 25,276.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.36 : 39,178.12 = 18,312.08 : x
  2. Step 2: Convert to fraction form
    28,383.36/39,178.12 = 18,312.08/x
  3. Step 3: Cross multiply
    28,383.36x = 39,178.12 × 18,312.08
  4. Step 4: Simplify right side
    28,383.36x = 717,432,867.69
  5. Step 5: Solve for x
    x = 717,432,867.69/28,383.36
  6. Step 6: Final answer
    x = 25,276.53

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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.