Home / 21,150.08-31,730.08-11,284.16

Finding the Fourth Proportional to 21,150.08, 31,730.08 and 11,284.16

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Solution

The fourth proportional to 21,150.08, 31,730.08 and 11,284.16 is: 16,928.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.08 : 31,730.08 = 11,284.16 : x
  2. Step 2: Convert to fraction form
    21,150.08/31,730.08 = 11,284.16/x
  3. Step 3: Cross multiply
    21,150.08x = 31,730.08 × 11,284.16
  4. Step 4: Simplify right side
    21,150.08x = 358,047,299.53
  5. Step 5: Solve for x
    x = 358,047,299.53/21,150.08
  6. Step 6: Final answer
    x = 16,928.89

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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.