Home / 15,300.56-21,108.12-9,331.28

Finding the Fourth Proportional to 15,300.56, 21,108.12 and 9,331.28

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Solution

The fourth proportional to 15,300.56, 21,108.12 and 9,331.28 is: 12,873.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,300.56 : 21,108.12 = 9,331.28 : x
  2. Step 2: Convert to fraction form
    15,300.56/21,108.12 = 9,331.28/x
  3. Step 3: Cross multiply
    15,300.56x = 21,108.12 × 9,331.28
  4. Step 4: Simplify right side
    15,300.56x = 196,965,777.99
  5. Step 5: Solve for x
    x = 196,965,777.99/15,300.56
  6. Step 6: Final answer
    x = 12,873.11

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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.