Home / 19,319.85-28,959.80-10,981.94

Finding the Fourth Proportional to 19,319.85, 28,959.80 and 10,981.94

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Solution

The fourth proportional to 19,319.85, 28,959.80 and 10,981.94 is: 16,461.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319.85 : 28,959.80 = 10,981.94 : x
  2. Step 2: Convert to fraction form
    19,319.85/28,959.80 = 10,981.94/x
  3. Step 3: Cross multiply
    19,319.85x = 28,959.80 × 10,981.94
  4. Step 4: Simplify right side
    19,319.85x = 318,034,586.30
  5. Step 5: Solve for x
    x = 318,034,586.30/19,319.85
  6. Step 6: Final answer
    x = 16,461.55

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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.