Home / 13,830.21-19,085.81-7,542.58

Finding the Fourth Proportional to 13,830.21, 19,085.81 and 7,542.58

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Solution

The fourth proportional to 13,830.21, 19,085.81 and 7,542.58 is: 10,408.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.21 : 19,085.81 = 7,542.58 : x
  2. Step 2: Convert to fraction form
    13,830.21/19,085.81 = 7,542.58/x
  3. Step 3: Cross multiply
    13,830.21x = 19,085.81 × 7,542.58
  4. Step 4: Simplify right side
    13,830.21x = 143,956,248.79
  5. Step 5: Solve for x
    x = 143,956,248.79/13,830.21
  6. Step 6: Final answer
    x = 10,408.83

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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.