Home / 20,070.15-27,700.23-11,570.77

Finding the Fourth Proportional to 20,070.15, 27,700.23 and 11,570.77

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Solution

The fourth proportional to 20,070.15, 27,700.23 and 11,570.77 is: 15,969.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.15 : 27,700.23 = 11,570.77 : x
  2. Step 2: Convert to fraction form
    20,070.15/27,700.23 = 11,570.77/x
  3. Step 3: Cross multiply
    20,070.15x = 27,700.23 × 11,570.77
  4. Step 4: Simplify right side
    20,070.15x = 320,512,990.28
  5. Step 5: Solve for x
    x = 320,512,990.28/20,070.15
  6. Step 6: Final answer
    x = 15,969.64

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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.