Home / 13,981.18-19,298.14-8,319.94

Finding the Fourth Proportional to 13,981.18, 19,298.14 and 8,319.94

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Solution

The fourth proportional to 13,981.18, 19,298.14 and 8,319.94 is: 11,483.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.18 : 19,298.14 = 8,319.94 : x
  2. Step 2: Convert to fraction form
    13,981.18/19,298.14 = 8,319.94/x
  3. Step 3: Cross multiply
    13,981.18x = 19,298.14 × 8,319.94
  4. Step 4: Simplify right side
    13,981.18x = 160,559,366.91
  5. Step 5: Solve for x
    x = 160,559,366.91/13,981.18
  6. Step 6: Final answer
    x = 11,483.96

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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.