Home / 10,981.40-16,472.10-5,435.60

Finding the Fourth Proportional to 10,981.40, 16,472.10 and 5,435.60

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Solution

The fourth proportional to 10,981.40, 16,472.10 and 5,435.60 is: 8,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.40 : 16,472.10 = 5,435.60 : x
  2. Step 2: Convert to fraction form
    10,981.40/16,472.10 = 5,435.60/x
  3. Step 3: Cross multiply
    10,981.40x = 16,472.10 × 5,435.60
  4. Step 4: Simplify right side
    10,981.40x = 89,535,746.76
  5. Step 5: Solve for x
    x = 89,535,746.76/10,981.40
  6. Step 6: Final answer
    x = 8,153.40

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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.