Home / 21,773.04-30,047.40-15,411

Finding the Fourth Proportional to 21,773.04, 30,047.40 and 15,411

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Solution

The fourth proportional to 21,773.04, 30,047.40 and 15,411 is: 21,267.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,773.04 : 30,047.40 = 15,411 : x
  2. Step 2: Convert to fraction form
    21,773.04/30,047.40 = 15,411/x
  3. Step 3: Cross multiply
    21,773.04x = 30,047.40 × 15,411
  4. Step 4: Simplify right side
    21,773.04x = 463,060,481.40
  5. Step 5: Solve for x
    x = 463,060,481.40/21,773.04
  6. Step 6: Final answer
    x = 21,267.61

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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.