Home / 20,117.16-30,177.36-7,643.16

Finding the Fourth Proportional to 20,117.16, 30,177.36 and 7,643.16

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Solution

The fourth proportional to 20,117.16, 30,177.36 and 7,643.16 is: 11,465.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.16 : 30,177.36 = 7,643.16 : x
  2. Step 2: Convert to fraction form
    20,117.16/30,177.36 = 7,643.16/x
  3. Step 3: Cross multiply
    20,117.16x = 30,177.36 × 7,643.16
  4. Step 4: Simplify right side
    20,117.16x = 230,650,390.86
  5. Step 5: Solve for x
    x = 230,650,390.86/20,117.16
  6. Step 6: Final answer
    x = 11,465.36

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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.