Home / 11,700.06-16,140.87-6,981.54

Finding the Fourth Proportional to 11,700.06, 16,140.87 and 6,981.54

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Solution

The fourth proportional to 11,700.06, 16,140.87 and 6,981.54 is: 9,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,700.06 : 16,140.87 = 6,981.54 : x
  2. Step 2: Convert to fraction form
    11,700.06/16,140.87 = 6,981.54/x
  3. Step 3: Cross multiply
    11,700.06x = 16,140.87 × 6,981.54
  4. Step 4: Simplify right side
    11,700.06x = 112,688,129.54
  5. Step 5: Solve for x
    x = 112,688,129.54/11,700.06
  6. Step 6: Final answer
    x = 9,631.41

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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.