Home / 13,931.92-20,897.65-5,611.74

Finding the Fourth Proportional to 13,931.92, 20,897.65 and 5,611.74

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Solution

The fourth proportional to 13,931.92, 20,897.65 and 5,611.74 is: 8,417.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.92 : 20,897.65 = 5,611.74 : x
  2. Step 2: Convert to fraction form
    13,931.92/20,897.65 = 5,611.74/x
  3. Step 3: Cross multiply
    13,931.92x = 20,897.65 × 5,611.74
  4. Step 4: Simplify right side
    13,931.92x = 117,272,178.41
  5. Step 5: Solve for x
    x = 117,272,178.41/13,931.92
  6. Step 6: Final answer
    x = 8,417.52

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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.