Home / 15,492.36-21,380.58-9,119.28

Finding the Fourth Proportional to 15,492.36, 21,380.58 and 9,119.28

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Solution

The fourth proportional to 15,492.36, 21,380.58 and 9,119.28 is: 12,585.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.36 : 21,380.58 = 9,119.28 : x
  2. Step 2: Convert to fraction form
    15,492.36/21,380.58 = 9,119.28/x
  3. Step 3: Cross multiply
    15,492.36x = 21,380.58 × 9,119.28
  4. Step 4: Simplify right side
    15,492.36x = 194,975,495.58
  5. Step 5: Solve for x
    x = 194,975,495.58/15,492.36
  6. Step 6: Final answer
    x = 12,585.27

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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.