Home / 13,931.18-19,224.92-7,557.78

Finding the Fourth Proportional to 13,931.18, 19,224.92 and 7,557.78

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Solution

The fourth proportional to 13,931.18, 19,224.92 and 7,557.78 is: 10,429.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.18 : 19,224.92 = 7,557.78 : x
  2. Step 2: Convert to fraction form
    13,931.18/19,224.92 = 7,557.78/x
  3. Step 3: Cross multiply
    13,931.18x = 19,224.92 × 7,557.78
  4. Step 4: Simplify right side
    13,931.18x = 145,297,715.88
  5. Step 5: Solve for x
    x = 145,297,715.88/13,931.18
  6. Step 6: Final answer
    x = 10,429.68

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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.