Home / 13,125.93-18,113.81-7,748.61

Finding the Fourth Proportional to 13,125.93, 18,113.81 and 7,748.61

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Solution

The fourth proportional to 13,125.93, 18,113.81 and 7,748.61 is: 10,693.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.93 : 18,113.81 = 7,748.61 : x
  2. Step 2: Convert to fraction form
    13,125.93/18,113.81 = 7,748.61/x
  3. Step 3: Cross multiply
    13,125.93x = 18,113.81 × 7,748.61
  4. Step 4: Simplify right side
    13,125.93x = 140,356,810.56
  5. Step 5: Solve for x
    x = 140,356,810.56/13,125.93
  6. Step 6: Final answer
    x = 10,693.09

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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.