Home / 13,830.12-19,085.58-7,542.60

Finding the Fourth Proportional to 13,830.12, 19,085.58 and 7,542.60

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Solution

The fourth proportional to 13,830.12, 19,085.58 and 7,542.60 is: 10,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.12 : 19,085.58 = 7,542.60 : x
  2. Step 2: Convert to fraction form
    13,830.12/19,085.58 = 7,542.60/x
  3. Step 3: Cross multiply
    13,830.12x = 19,085.58 × 7,542.60
  4. Step 4: Simplify right side
    13,830.12x = 143,954,895.71
  5. Step 5: Solve for x
    x = 143,954,895.71/13,830.12
  6. Step 6: Final answer
    x = 10,408.80

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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.