Home / 19,139.67-28,709.51-10,429.94

Finding the Fourth Proportional to 19,139.67, 28,709.51 and 10,429.94

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Solution

The fourth proportional to 19,139.67, 28,709.51 and 10,429.94 is: 15,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.67 : 28,709.51 = 10,429.94 : x
  2. Step 2: Convert to fraction form
    19,139.67/28,709.51 = 10,429.94/x
  3. Step 3: Cross multiply
    19,139.67x = 28,709.51 × 10,429.94
  4. Step 4: Simplify right side
    19,139.67x = 299,438,271.03
  5. Step 5: Solve for x
    x = 299,438,271.03/19,139.67
  6. Step 6: Final answer
    x = 15,644.90

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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.