Home / 30,941.76-42,710.68-18,366.50

Finding the Fourth Proportional to 30,941.76, 42,710.68 and 18,366.50

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Solution

The fourth proportional to 30,941.76, 42,710.68 and 18,366.50 is: 25,352.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,941.76 : 42,710.68 = 18,366.50 : x
  2. Step 2: Convert to fraction form
    30,941.76/42,710.68 = 18,366.50/x
  3. Step 3: Cross multiply
    30,941.76x = 42,710.68 × 18,366.50
  4. Step 4: Simplify right side
    30,941.76x = 784,445,704.22
  5. Step 5: Solve for x
    x = 784,445,704.22/30,941.76
  6. Step 6: Final answer
    x = 25,352.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.