Home / 15,856.08-21,884.10-9,140.52

Finding the Fourth Proportional to 15,856.08, 21,884.10 and 9,140.52

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Solution

The fourth proportional to 15,856.08, 21,884.10 and 9,140.52 is: 12,615.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.08 : 21,884.10 = 9,140.52 : x
  2. Step 2: Convert to fraction form
    15,856.08/21,884.10 = 9,140.52/x
  3. Step 3: Cross multiply
    15,856.08x = 21,884.10 × 9,140.52
  4. Step 4: Simplify right side
    15,856.08x = 200,032,053.73
  5. Step 5: Solve for x
    x = 200,032,053.73/15,856.08
  6. Step 6: Final answer
    x = 12,615.48

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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.