Home / 15,371.99-21,213.63-9,002.35

Finding the Fourth Proportional to 15,371.99, 21,213.63 and 9,002.35

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Solution

The fourth proportional to 15,371.99, 21,213.63 and 9,002.35 is: 12,423.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.99 : 21,213.63 = 9,002.35 : x
  2. Step 2: Convert to fraction form
    15,371.99/21,213.63 = 9,002.35/x
  3. Step 3: Cross multiply
    15,371.99x = 21,213.63 × 9,002.35
  4. Step 4: Simplify right side
    15,371.99x = 190,972,514.79
  5. Step 5: Solve for x
    x = 190,972,514.79/15,371.99
  6. Step 6: Final answer
    x = 12,423.41

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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.