Home / 20,972.81-31,459.04-9,873.44

Finding the Fourth Proportional to 20,972.81, 31,459.04 and 9,873.44

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Solution

The fourth proportional to 20,972.81, 31,459.04 and 9,873.44 is: 14,810.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.81 : 31,459.04 = 9,873.44 : x
  2. Step 2: Convert to fraction form
    20,972.81/31,459.04 = 9,873.44/x
  3. Step 3: Cross multiply
    20,972.81x = 31,459.04 × 9,873.44
  4. Step 4: Simplify right side
    20,972.81x = 310,608,894.53
  5. Step 5: Solve for x
    x = 310,608,894.53/20,972.81
  6. Step 6: Final answer
    x = 14,810.08

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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.