Home / 15,383.16-21,223.07-9,008.67

Finding the Fourth Proportional to 15,383.16, 21,223.07 and 9,008.67

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Solution

The fourth proportional to 15,383.16, 21,223.07 and 9,008.67 is: 12,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.16 : 21,223.07 = 9,008.67 : x
  2. Step 2: Convert to fraction form
    15,383.16/21,223.07 = 9,008.67/x
  3. Step 3: Cross multiply
    15,383.16x = 21,223.07 × 9,008.67
  4. Step 4: Simplify right side
    15,383.16x = 191,191,588.97
  5. Step 5: Solve for x
    x = 191,191,588.97/15,383.16
  6. Step 6: Final answer
    x = 12,428.63

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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.