Home / 22,815.08-31,484.64-12,743.40

Finding the Fourth Proportional to 22,815.08, 31,484.64 and 12,743.40

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Solution

The fourth proportional to 22,815.08, 31,484.64 and 12,743.40 is: 17,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815.08 : 31,484.64 = 12,743.40 : x
  2. Step 2: Convert to fraction form
    22,815.08/31,484.64 = 12,743.40/x
  3. Step 3: Cross multiply
    22,815.08x = 31,484.64 × 12,743.40
  4. Step 4: Simplify right side
    22,815.08x = 401,221,361.38
  5. Step 5: Solve for x
    x = 401,221,361.38/22,815.08
  6. Step 6: Final answer
    x = 17,585.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.