Home / 10,981.89-15,155.08-6,136.62

Finding the Fourth Proportional to 10,981.89, 15,155.08 and 6,136.62

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Solution

The fourth proportional to 10,981.89, 15,155.08 and 6,136.62 is: 8,468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.89 : 15,155.08 = 6,136.62 : x
  2. Step 2: Convert to fraction form
    10,981.89/15,155.08 = 6,136.62/x
  3. Step 3: Cross multiply
    10,981.89x = 15,155.08 × 6,136.62
  4. Step 4: Simplify right side
    10,981.89x = 93,000,967.03
  5. Step 5: Solve for x
    x = 93,000,967.03/10,981.89
  6. Step 6: Final answer
    x = 8,468.58

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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.