Home / 21,774.04-30,047.32-12,342.40

Finding the Fourth Proportional to 21,774.04, 30,047.32 and 12,342.40

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Solution

The fourth proportional to 21,774.04, 30,047.32 and 12,342.40 is: 17,032.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,774.04 : 30,047.32 = 12,342.40 : x
  2. Step 2: Convert to fraction form
    21,774.04/30,047.32 = 12,342.40/x
  3. Step 3: Cross multiply
    21,774.04x = 30,047.32 × 12,342.40
  4. Step 4: Simplify right side
    21,774.04x = 370,855,982.68
  5. Step 5: Solve for x
    x = 370,855,982.68/21,774.04
  6. Step 6: Final answer
    x = 17,032.03

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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.