Home / 13,830.19-19,085.56-7,542.57

Finding the Fourth Proportional to 13,830.19, 19,085.56 and 7,542.57

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Solution

The fourth proportional to 13,830.19, 19,085.56 and 7,542.57 is: 10,408.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.19 : 19,085.56 = 7,542.57 : x
  2. Step 2: Convert to fraction form
    13,830.19/19,085.56 = 7,542.57/x
  3. Step 3: Cross multiply
    13,830.19x = 19,085.56 × 7,542.57
  4. Step 4: Simplify right side
    13,830.19x = 143,954,172.29
  5. Step 5: Solve for x
    x = 143,954,172.29/13,830.19
  6. Step 6: Final answer
    x = 10,408.69

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Half scale
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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.