Home / 15,380.13-21,214.74-9,704.86

Finding the Fourth Proportional to 15,380.13, 21,214.74 and 9,704.86

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Solution

The fourth proportional to 15,380.13, 21,214.74 and 9,704.86 is: 13,386.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.13 : 21,214.74 = 9,704.86 : x
  2. Step 2: Convert to fraction form
    15,380.13/21,214.74 = 9,704.86/x
  3. Step 3: Cross multiply
    15,380.13x = 21,214.74 × 9,704.86
  4. Step 4: Simplify right side
    15,380.13x = 205,886,102.44
  5. Step 5: Solve for x
    x = 205,886,102.44/15,380.13
  6. Step 6: Final answer
    x = 13,386.50

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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.