Home / 12,914.32-19,368.24-5,515.12

Finding the Fourth Proportional to 12,914.32, 19,368.24 and 5,515.12

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Solution

The fourth proportional to 12,914.32, 19,368.24 and 5,515.12 is: 8,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,914.32 : 19,368.24 = 5,515.12 : x
  2. Step 2: Convert to fraction form
    12,914.32/19,368.24 = 5,515.12/x
  3. Step 3: Cross multiply
    12,914.32x = 19,368.24 × 5,515.12
  4. Step 4: Simplify right side
    12,914.32x = 106,818,167.79
  5. Step 5: Solve for x
    x = 106,818,167.79/12,914.32
  6. Step 6: Final answer
    x = 8,271.30

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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.