Home / 13,711.64-20,570.70-7,136.33

Finding the Fourth Proportional to 13,711.64, 20,570.70 and 7,136.33

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Solution

The fourth proportional to 13,711.64, 20,570.70 and 7,136.33 is: 10,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.64 : 20,570.70 = 7,136.33 : x
  2. Step 2: Convert to fraction form
    13,711.64/20,570.70 = 7,136.33/x
  3. Step 3: Cross multiply
    13,711.64x = 20,570.70 × 7,136.33
  4. Step 4: Simplify right side
    13,711.64x = 146,799,303.53
  5. Step 5: Solve for x
    x = 146,799,303.53/13,711.64
  6. Step 6: Final answer
    x = 10,706.18

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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.