Home / 19,139.80-28,685.40-10,367.50

Finding the Fourth Proportional to 19,139.80, 28,685.40 and 10,367.50

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Solution

The fourth proportional to 19,139.80, 28,685.40 and 10,367.50 is: 15,538.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.80 : 28,685.40 = 10,367.50 : x
  2. Step 2: Convert to fraction form
    19,139.80/28,685.40 = 10,367.50/x
  3. Step 3: Cross multiply
    19,139.80x = 28,685.40 × 10,367.50
  4. Step 4: Simplify right side
    19,139.80x = 297,395,884.50
  5. Step 5: Solve for x
    x = 297,395,884.50/19,139.80
  6. Step 6: Final answer
    x = 15,538.09

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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.