Home / 28,230.98-38,959.05-15,656.54

Finding the Fourth Proportional to 28,230.98, 38,959.05 and 15,656.54

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Solution

The fourth proportional to 28,230.98, 38,959.05 and 15,656.54 is: 21,606.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.98 : 38,959.05 = 15,656.54 : x
  2. Step 2: Convert to fraction form
    28,230.98/38,959.05 = 15,656.54/x
  3. Step 3: Cross multiply
    28,230.98x = 38,959.05 × 15,656.54
  4. Step 4: Simplify right side
    28,230.98x = 609,963,924.69
  5. Step 5: Solve for x
    x = 609,963,924.69/28,230.98
  6. Step 6: Final answer
    x = 21,606.19

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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.