Home / 20,071.07-30,113.59-8,978.93

Finding the Fourth Proportional to 20,071.07, 30,113.59 and 8,978.93

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Solution

The fourth proportional to 20,071.07, 30,113.59 and 8,978.93 is: 13,471.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.07 : 30,113.59 = 8,978.93 : x
  2. Step 2: Convert to fraction form
    20,071.07/30,113.59 = 8,978.93/x
  3. Step 3: Cross multiply
    20,071.07x = 30,113.59 × 8,978.93
  4. Step 4: Simplify right side
    20,071.07x = 270,387,816.66
  5. Step 5: Solve for x
    x = 270,387,816.66/20,071.07
  6. Step 6: Final answer
    x = 13,471.52

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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.