Home / 13,178.68-18,180.47-7,586.44

Finding the Fourth Proportional to 13,178.68, 18,180.47 and 7,586.44

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Solution

The fourth proportional to 13,178.68, 18,180.47 and 7,586.44 is: 10,465.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.68 : 18,180.47 = 7,586.44 : x
  2. Step 2: Convert to fraction form
    13,178.68/18,180.47 = 7,586.44/x
  3. Step 3: Cross multiply
    13,178.68x = 18,180.47 × 7,586.44
  4. Step 4: Simplify right side
    13,178.68x = 137,925,018.34
  5. Step 5: Solve for x
    x = 137,925,018.34/13,178.68
  6. Step 6: Final answer
    x = 10,465.77

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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.