Home / 19,505.40-26,921.58-12,330.72

Finding the Fourth Proportional to 19,505.40, 26,921.58 and 12,330.72

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Solution

The fourth proportional to 19,505.40, 26,921.58 and 12,330.72 is: 17,019.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,505.40 : 26,921.58 = 12,330.72 : x
  2. Step 2: Convert to fraction form
    19,505.40/26,921.58 = 12,330.72/x
  3. Step 3: Cross multiply
    19,505.40x = 26,921.58 × 12,330.72
  4. Step 4: Simplify right side
    19,505.40x = 331,962,464.94
  5. Step 5: Solve for x
    x = 331,962,464.94/19,505.40
  6. Step 6: Final answer
    x = 17,019.00

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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.