Home / 20,561.58-30,693.51-18,070.47

Finding the Fourth Proportional to 20,561.58, 30,693.51 and 18,070.47

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Solution

The fourth proportional to 20,561.58, 30,693.51 and 18,070.47 is: 26,974.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.58 : 30,693.51 = 18,070.47 : x
  2. Step 2: Convert to fraction form
    20,561.58/30,693.51 = 18,070.47/x
  3. Step 3: Cross multiply
    20,561.58x = 30,693.51 × 18,070.47
  4. Step 4: Simplify right side
    20,561.58x = 554,646,151.65
  5. Step 5: Solve for x
    x = 554,646,151.65/20,561.58
  6. Step 6: Final answer
    x = 26,974.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.