Home / 20,155.46-30,030.67-19,023.69

Finding the Fourth Proportional to 20,155.46, 30,030.67 and 19,023.69

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Solution

The fourth proportional to 20,155.46, 30,030.67 and 19,023.69 is: 28,344.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.46 : 30,030.67 = 19,023.69 : x
  2. Step 2: Convert to fraction form
    20,155.46/30,030.67 = 19,023.69/x
  3. Step 3: Cross multiply
    20,155.46x = 30,030.67 × 19,023.69
  4. Step 4: Simplify right side
    20,155.46x = 571,294,156.57
  5. Step 5: Solve for x
    x = 571,294,156.57/20,155.46
  6. Step 6: Final answer
    x = 28,344.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.