Home / 19,990.77-29,977.44-10,628.55

Finding the Fourth Proportional to 19,990.77, 29,977.44 and 10,628.55

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Solution

The fourth proportional to 19,990.77, 29,977.44 and 10,628.55 is: 15,938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.77 : 29,977.44 = 10,628.55 : x
  2. Step 2: Convert to fraction form
    19,990.77/29,977.44 = 10,628.55/x
  3. Step 3: Cross multiply
    19,990.77x = 29,977.44 × 10,628.55
  4. Step 4: Simplify right side
    19,990.77x = 318,616,719.91
  5. Step 5: Solve for x
    x = 318,616,719.91/19,990.77
  6. Step 6: Final answer
    x = 15,938.19

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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.