Home / 22,490.52-31,036.74-12,419.64

Finding the Fourth Proportional to 22,490.52, 31,036.74 and 12,419.64

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Solution

The fourth proportional to 22,490.52, 31,036.74 and 12,419.64 is: 17,139.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,490.52 : 31,036.74 = 12,419.64 : x
  2. Step 2: Convert to fraction form
    22,490.52/31,036.74 = 12,419.64/x
  3. Step 3: Cross multiply
    22,490.52x = 31,036.74 × 12,419.64
  4. Step 4: Simplify right side
    22,490.52x = 385,465,137.57
  5. Step 5: Solve for x
    x = 385,465,137.57/22,490.52
  6. Step 6: Final answer
    x = 17,139.01

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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.