Home / 20,285.83-28,030.22-15,610.51

Finding the Fourth Proportional to 20,285.83, 28,030.22 and 15,610.51

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Solution

The fourth proportional to 20,285.83, 28,030.22 and 15,610.51 is: 21,570.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.83 : 28,030.22 = 15,610.51 : x
  2. Step 2: Convert to fraction form
    20,285.83/28,030.22 = 15,610.51/x
  3. Step 3: Cross multiply
    20,285.83x = 28,030.22 × 15,610.51
  4. Step 4: Simplify right side
    20,285.83x = 437,566,029.61
  5. Step 5: Solve for x
    x = 437,566,029.61/20,285.83
  6. Step 6: Final answer
    x = 21,570.03

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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.