Home / 20,984.07-31,475.01-7,835.40

Finding the Fourth Proportional to 20,984.07, 31,475.01 and 7,835.40

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Solution

The fourth proportional to 20,984.07, 31,475.01 and 7,835.40 is: 11,752.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.07 : 31,475.01 = 7,835.40 : x
  2. Step 2: Convert to fraction form
    20,984.07/31,475.01 = 7,835.40/x
  3. Step 3: Cross multiply
    20,984.07x = 31,475.01 × 7,835.40
  4. Step 4: Simplify right side
    20,984.07x = 246,619,293.35
  5. Step 5: Solve for x
    x = 246,619,293.35/20,984.07
  6. Step 6: Final answer
    x = 11,752.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.