Home / 19,167.95-28,756.80-7,321.70

Finding the Fourth Proportional to 19,167.95, 28,756.80 and 7,321.70

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Solution

The fourth proportional to 19,167.95, 28,756.80 and 7,321.70 is: 10,984.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,167.95 : 28,756.80 = 7,321.70 : x
  2. Step 2: Convert to fraction form
    19,167.95/28,756.80 = 7,321.70/x
  3. Step 3: Cross multiply
    19,167.95x = 28,756.80 × 7,321.70
  4. Step 4: Simplify right side
    19,167.95x = 210,548,518.78
  5. Step 5: Solve for x
    x = 210,548,518.78/19,167.95
  6. Step 6: Final answer
    x = 10,984.41

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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.