Home / 13,115.02-18,096.61-7,809.70

Finding the Fourth Proportional to 13,115.02, 18,096.61 and 7,809.70

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Solution

The fourth proportional to 13,115.02, 18,096.61 and 7,809.70 is: 10,776.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.02 : 18,096.61 = 7,809.70 : x
  2. Step 2: Convert to fraction form
    13,115.02/18,096.61 = 7,809.70/x
  3. Step 3: Cross multiply
    13,115.02x = 18,096.61 × 7,809.70
  4. Step 4: Simplify right side
    13,115.02x = 141,329,095.12
  5. Step 5: Solve for x
    x = 141,329,095.12/13,115.02
  6. Step 6: Final answer
    x = 10,776.13

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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.