Home / 15,690.36-21,653.28-9,401.52

Finding the Fourth Proportional to 15,690.36, 21,653.28 and 9,401.52

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Solution

The fourth proportional to 15,690.36, 21,653.28 and 9,401.52 is: 12,974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.36 : 21,653.28 = 9,401.52 : x
  2. Step 2: Convert to fraction form
    15,690.36/21,653.28 = 9,401.52/x
  3. Step 3: Cross multiply
    15,690.36x = 21,653.28 × 9,401.52
  4. Step 4: Simplify right side
    15,690.36x = 203,573,744.99
  5. Step 5: Solve for x
    x = 203,573,744.99/15,690.36
  6. Step 6: Final answer
    x = 12,974.45

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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.