Home / 13,931.53-20,897.08-5,611.33

Finding the Fourth Proportional to 13,931.53, 20,897.08 and 5,611.33

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Solution

The fourth proportional to 13,931.53, 20,897.08 and 5,611.33 is: 8,416.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.53 : 20,897.08 = 5,611.33 : x
  2. Step 2: Convert to fraction form
    13,931.53/20,897.08 = 5,611.33/x
  3. Step 3: Cross multiply
    13,931.53x = 20,897.08 × 5,611.33
  4. Step 4: Simplify right side
    13,931.53x = 117,260,345.65
  5. Step 5: Solve for x
    x = 117,260,345.65/13,931.53
  6. Step 6: Final answer
    x = 8,416.91

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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.