Home / 12,888.21-19,332.32-3,528.30

Finding the Fourth Proportional to 12,888.21, 19,332.32 and 3,528.30

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Solution

The fourth proportional to 12,888.21, 19,332.32 and 3,528.30 is: 5,292.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.21 : 19,332.32 = 3,528.30 : x
  2. Step 2: Convert to fraction form
    12,888.21/19,332.32 = 3,528.30/x
  3. Step 3: Cross multiply
    12,888.21x = 19,332.32 × 3,528.30
  4. Step 4: Simplify right side
    12,888.21x = 68,210,299.36
  5. Step 5: Solve for x
    x = 68,210,299.36/12,888.21
  6. Step 6: Final answer
    x = 5,292.46

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Double scale
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Similar ratio
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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.