Home / 13,389.90-20,106.45-10,106.70

Finding the Fourth Proportional to 13,389.90, 20,106.45 and 10,106.70

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Solution

The fourth proportional to 13,389.90, 20,106.45 and 10,106.70 is: 15,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.90 : 20,106.45 = 10,106.70 : x
  2. Step 2: Convert to fraction form
    13,389.90/20,106.45 = 10,106.70/x
  3. Step 3: Cross multiply
    13,389.90x = 20,106.45 × 10,106.70
  4. Step 4: Simplify right side
    13,389.90x = 203,209,858.22
  5. Step 5: Solve for x
    x = 203,209,858.22/13,389.90
  6. Step 6: Final answer
    x = 15,176.35

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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.