Home / 39,780.10-59,665.69-10,198.63

Finding the Fourth Proportional to 39,780.10, 59,665.69 and 10,198.63

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Solution

The fourth proportional to 39,780.10, 59,665.69 and 10,198.63 is: 15,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.10 : 59,665.69 = 10,198.63 : x
  2. Step 2: Convert to fraction form
    39,780.10/59,665.69 = 10,198.63/x
  3. Step 3: Cross multiply
    39,780.10x = 59,665.69 × 10,198.63
  4. Step 4: Simplify right side
    39,780.10x = 608,508,159.59
  5. Step 5: Solve for x
    x = 608,508,159.59/39,780.10
  6. Step 6: Final answer
    x = 15,296.80

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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.