Home / 27,985.50-38,620.80-15,411.06

Finding the Fourth Proportional to 27,985.50, 38,620.80 and 15,411.06

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Solution

The fourth proportional to 27,985.50, 38,620.80 and 15,411.06 is: 21,267.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.50 : 38,620.80 = 15,411.06 : x
  2. Step 2: Convert to fraction form
    27,985.50/38,620.80 = 15,411.06/x
  3. Step 3: Cross multiply
    27,985.50x = 38,620.80 × 15,411.06
  4. Step 4: Simplify right side
    27,985.50x = 595,187,466.05
  5. Step 5: Solve for x
    x = 595,187,466.05/27,985.50
  6. Step 6: Final answer
    x = 21,267.71

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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.