Home / 27,761.07-38,302.70-15,820.05

Finding the Fourth Proportional to 27,761.07, 38,302.70 and 15,820.05

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Solution

The fourth proportional to 27,761.07, 38,302.70 and 15,820.05 is: 21,827.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,761.07 : 38,302.70 = 15,820.05 : x
  2. Step 2: Convert to fraction form
    27,761.07/38,302.70 = 15,820.05/x
  3. Step 3: Cross multiply
    27,761.07x = 38,302.70 × 15,820.05
  4. Step 4: Simplify right side
    27,761.07x = 605,950,550.03
  5. Step 5: Solve for x
    x = 605,950,550.03/27,761.07
  6. Step 6: Final answer
    x = 21,827.35

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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.