Home / 13,555.17-18,705.95-7,586.84

Finding the Fourth Proportional to 13,555.17, 18,705.95 and 7,586.84

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Solution

The fourth proportional to 13,555.17, 18,705.95 and 7,586.84 is: 10,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.17 : 18,705.95 = 7,586.84 : x
  2. Step 2: Convert to fraction form
    13,555.17/18,705.95 = 7,586.84/x
  3. Step 3: Cross multiply
    13,555.17x = 18,705.95 × 7,586.84
  4. Step 4: Simplify right side
    13,555.17x = 141,918,946.68
  5. Step 5: Solve for x
    x = 141,918,946.68/13,555.17
  6. Step 6: Final answer
    x = 10,469.73

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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.