Home / 18,570.86-25,636.47-12,602.78

Finding the Fourth Proportional to 18,570.86, 25,636.47 and 12,602.78

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Solution

The fourth proportional to 18,570.86, 25,636.47 and 12,602.78 is: 17,397.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.86 : 25,636.47 = 12,602.78 : x
  2. Step 2: Convert to fraction form
    18,570.86/25,636.47 = 12,602.78/x
  3. Step 3: Cross multiply
    18,570.86x = 25,636.47 × 12,602.78
  4. Step 4: Simplify right side
    18,570.86x = 323,090,791.39
  5. Step 5: Solve for x
    x = 323,090,791.39/18,570.86
  6. Step 6: Final answer
    x = 17,397.73

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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.