Home / 15,603.71-21,533.20-8,530.12

Finding the Fourth Proportional to 15,603.71, 21,533.20 and 8,530.12

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Solution

The fourth proportional to 15,603.71, 21,533.20 and 8,530.12 is: 11,771.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.71 : 21,533.20 = 8,530.12 : x
  2. Step 2: Convert to fraction form
    15,603.71/21,533.20 = 8,530.12/x
  3. Step 3: Cross multiply
    15,603.71x = 21,533.20 × 8,530.12
  4. Step 4: Simplify right side
    15,603.71x = 183,680,785.58
  5. Step 5: Solve for x
    x = 183,680,785.58/15,603.71
  6. Step 6: Final answer
    x = 11,771.61

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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.