Home / 13,389.71-20,091.45-6,377.68

Finding the Fourth Proportional to 13,389.71, 20,091.45 and 6,377.68

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Solution

The fourth proportional to 13,389.71, 20,091.45 and 6,377.68 is: 9,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.71 : 20,091.45 = 6,377.68 : x
  2. Step 2: Convert to fraction form
    13,389.71/20,091.45 = 6,377.68/x
  3. Step 3: Cross multiply
    13,389.71x = 20,091.45 × 6,377.68
  4. Step 4: Simplify right side
    13,389.71x = 128,136,838.84
  5. Step 5: Solve for x
    x = 128,136,838.84/13,389.71
  6. Step 6: Final answer
    x = 9,569.80

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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.