Home / 13,931.58-20,897.68-5,047.71

Finding the Fourth Proportional to 13,931.58, 20,897.68 and 5,047.71

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Solution

The fourth proportional to 13,931.58, 20,897.68 and 5,047.71 is: 7,571.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.58 : 20,897.68 = 5,047.71 : x
  2. Step 2: Convert to fraction form
    13,931.58/20,897.68 = 5,047.71/x
  3. Step 3: Cross multiply
    13,931.58x = 20,897.68 × 5,047.71
  4. Step 4: Simplify right side
    13,931.58x = 105,485,428.31
  5. Step 5: Solve for x
    x = 105,485,428.31/13,931.58
  6. Step 6: Final answer
    x = 7,571.68

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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.