Home / 15,655.08-21,604.52-8,939.28

Finding the Fourth Proportional to 15,655.08, 21,604.52 and 8,939.28

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Solution

The fourth proportional to 15,655.08, 21,604.52 and 8,939.28 is: 12,336.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.08 : 21,604.52 = 8,939.28 : x
  2. Step 2: Convert to fraction form
    15,655.08/21,604.52 = 8,939.28/x
  3. Step 3: Cross multiply
    15,655.08x = 21,604.52 × 8,939.28
  4. Step 4: Simplify right side
    15,655.08x = 193,128,853.55
  5. Step 5: Solve for x
    x = 193,128,853.55/15,655.08
  6. Step 6: Final answer
    x = 12,336.50

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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.