Home / 13,426.90-20,140.35-7,206.10

Finding the Fourth Proportional to 13,426.90, 20,140.35 and 7,206.10

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Solution

The fourth proportional to 13,426.90, 20,140.35 and 7,206.10 is: 10,809.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.90 : 20,140.35 = 7,206.10 : x
  2. Step 2: Convert to fraction form
    13,426.90/20,140.35 = 7,206.10/x
  3. Step 3: Cross multiply
    13,426.90x = 20,140.35 × 7,206.10
  4. Step 4: Simplify right side
    13,426.90x = 145,133,376.14
  5. Step 5: Solve for x
    x = 145,133,376.14/13,426.90
  6. Step 6: Final answer
    x = 10,809.15

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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.