Home / 13,980.29-20,972.05-6,962.45

Finding the Fourth Proportional to 13,980.29, 20,972.05 and 6,962.45

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Solution

The fourth proportional to 13,980.29, 20,972.05 and 6,962.45 is: 10,444.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.29 : 20,972.05 = 6,962.45 : x
  2. Step 2: Convert to fraction form
    13,980.29/20,972.05 = 6,962.45/x
  3. Step 3: Cross multiply
    13,980.29x = 20,972.05 × 6,962.45
  4. Step 4: Simplify right side
    13,980.29x = 146,016,727.26
  5. Step 5: Solve for x
    x = 146,016,727.26/13,980.29
  6. Step 6: Final answer
    x = 10,444.47

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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.