Home / 20,570.55-28,387.63-11,495.51

Finding the Fourth Proportional to 20,570.55, 28,387.63 and 11,495.51

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Solution

The fourth proportional to 20,570.55, 28,387.63 and 11,495.51 is: 15,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.55 : 28,387.63 = 11,495.51 : x
  2. Step 2: Convert to fraction form
    20,570.55/28,387.63 = 11,495.51/x
  3. Step 3: Cross multiply
    20,570.55x = 28,387.63 × 11,495.51
  4. Step 4: Simplify right side
    20,570.55x = 326,330,284.54
  5. Step 5: Solve for x
    x = 326,330,284.54/20,570.55
  6. Step 6: Final answer
    x = 15,863.96

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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.