Home / 15,528.83-21,429.14-8,455.23

Finding the Fourth Proportional to 15,528.83, 21,429.14 and 8,455.23

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Solution

The fourth proportional to 15,528.83, 21,429.14 and 8,455.23 is: 11,667.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.83 : 21,429.14 = 8,455.23 : x
  2. Step 2: Convert to fraction form
    15,528.83/21,429.14 = 8,455.23/x
  3. Step 3: Cross multiply
    15,528.83x = 21,429.14 × 8,455.23
  4. Step 4: Simplify right side
    15,528.83x = 181,188,265.13
  5. Step 5: Solve for x
    x = 181,188,265.13/15,528.83
  6. Step 6: Final answer
    x = 11,667.87

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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.