Home / 13,250.55-19,875.72-3,389.80

Finding the Fourth Proportional to 13,250.55, 19,875.72 and 3,389.80

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Solution

The fourth proportional to 13,250.55, 19,875.72 and 3,389.80 is: 5,084.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,250.55 : 19,875.72 = 3,389.80 : x
  2. Step 2: Convert to fraction form
    13,250.55/19,875.72 = 3,389.80/x
  3. Step 3: Cross multiply
    13,250.55x = 19,875.72 × 3,389.80
  4. Step 4: Simplify right side
    13,250.55x = 67,374,715.66
  5. Step 5: Solve for x
    x = 67,374,715.66/13,250.55
  6. Step 6: Final answer
    x = 5,084.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.