Home / 13,929.76-20,897.72-6,913.60

Finding the Fourth Proportional to 13,929.76, 20,897.72 and 6,913.60

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Solution

The fourth proportional to 13,929.76, 20,897.72 and 6,913.60 is: 10,371.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.76 : 20,897.72 = 6,913.60 : x
  2. Step 2: Convert to fraction form
    13,929.76/20,897.72 = 6,913.60/x
  3. Step 3: Cross multiply
    13,929.76x = 20,897.72 × 6,913.60
  4. Step 4: Simplify right side
    13,929.76x = 144,478,476.99
  5. Step 5: Solve for x
    x = 144,478,476.99/13,929.76
  6. Step 6: Final answer
    x = 10,371.93

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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.