Home / 20,943.77-31,425.91-9,851.58

Finding the Fourth Proportional to 20,943.77, 31,425.91 and 9,851.58

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Solution

The fourth proportional to 20,943.77, 31,425.91 and 9,851.58 is: 14,782.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.77 : 31,425.91 = 9,851.58 : x
  2. Step 2: Convert to fraction form
    20,943.77/31,425.91 = 9,851.58/x
  3. Step 3: Cross multiply
    20,943.77x = 31,425.91 × 9,851.58
  4. Step 4: Simplify right side
    20,943.77x = 309,594,841.81
  5. Step 5: Solve for x
    x = 309,594,841.81/20,943.77
  6. Step 6: Final answer
    x = 14,782.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.