Home / 15,362.10-21,192.75-9,311.40

Finding the Fourth Proportional to 15,362.10, 21,192.75 and 9,311.40

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Solution

The fourth proportional to 15,362.10, 21,192.75 and 9,311.40 is: 12,845.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,362.10 : 21,192.75 = 9,311.40 : x
  2. Step 2: Convert to fraction form
    15,362.10/21,192.75 = 9,311.40/x
  3. Step 3: Cross multiply
    15,362.10x = 21,192.75 × 9,311.40
  4. Step 4: Simplify right side
    15,362.10x = 197,334,172.35
  5. Step 5: Solve for x
    x = 197,334,172.35/15,362.10
  6. Step 6: Final answer
    x = 12,845.52

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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.