Home / 28,137.06-38,827.62-15,561

Finding the Fourth Proportional to 28,137.06, 38,827.62 and 15,561

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Solution

The fourth proportional to 28,137.06, 38,827.62 and 15,561 is: 21,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.06 : 38,827.62 = 15,561 : x
  2. Step 2: Convert to fraction form
    28,137.06/38,827.62 = 15,561/x
  3. Step 3: Cross multiply
    28,137.06x = 38,827.62 × 15,561
  4. Step 4: Simplify right side
    28,137.06x = 604,196,594.82
  5. Step 5: Solve for x
    x = 604,196,594.82/28,137.06
  6. Step 6: Final answer
    x = 21,473.34

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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.