Home / 28,085.84-42,117.11-11,434.56

Finding the Fourth Proportional to 28,085.84, 42,117.11 and 11,434.56

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Solution

The fourth proportional to 28,085.84, 42,117.11 and 11,434.56 is: 17,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.84 : 42,117.11 = 11,434.56 : x
  2. Step 2: Convert to fraction form
    28,085.84/42,117.11 = 11,434.56/x
  3. Step 3: Cross multiply
    28,085.84x = 42,117.11 × 11,434.56
  4. Step 4: Simplify right side
    28,085.84x = 481,590,564.15
  5. Step 5: Solve for x
    x = 481,590,564.15/28,085.84
  6. Step 6: Final answer
    x = 17,147.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.