Home / 15,490.42-21,360.45-11,009.50

Finding the Fourth Proportional to 15,490.42, 21,360.45 and 11,009.50

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Solution

The fourth proportional to 15,490.42, 21,360.45 and 11,009.50 is: 15,181.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.42 : 21,360.45 = 11,009.50 : x
  2. Step 2: Convert to fraction form
    15,490.42/21,360.45 = 11,009.50/x
  3. Step 3: Cross multiply
    15,490.42x = 21,360.45 × 11,009.50
  4. Step 4: Simplify right side
    15,490.42x = 235,167,874.28
  5. Step 5: Solve for x
    x = 235,167,874.28/15,490.42
  6. Step 6: Final answer
    x = 15,181.50

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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.