Home / 20,816.04-31,199.39-9,699.72

Finding the Fourth Proportional to 20,816.04, 31,199.39 and 9,699.72

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Solution

The fourth proportional to 20,816.04, 31,199.39 and 9,699.72 is: 14,538.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.04 : 31,199.39 = 9,699.72 : x
  2. Step 2: Convert to fraction form
    20,816.04/31,199.39 = 9,699.72/x
  3. Step 3: Cross multiply
    20,816.04x = 31,199.39 × 9,699.72
  4. Step 4: Simplify right side
    20,816.04x = 302,625,347.17
  5. Step 5: Solve for x
    x = 302,625,347.17/20,816.04
  6. Step 6: Final answer
    x = 14,538.08

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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.