Home / 19,221.56-26,526.54-12,145.40

Finding the Fourth Proportional to 19,221.56, 26,526.54 and 12,145.40

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Solution

The fourth proportional to 19,221.56, 26,526.54 and 12,145.40 is: 16,761.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.56 : 26,526.54 = 12,145.40 : x
  2. Step 2: Convert to fraction form
    19,221.56/26,526.54 = 12,145.40/x
  3. Step 3: Cross multiply
    19,221.56x = 26,526.54 × 12,145.40
  4. Step 4: Simplify right side
    19,221.56x = 322,175,438.92
  5. Step 5: Solve for x
    x = 322,175,438.92/19,221.56
  6. Step 6: Final answer
    x = 16,761.15

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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.