Home / 19,345.45-29,011.56-12,728.02

Finding the Fourth Proportional to 19,345.45, 29,011.56 and 12,728.02

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Solution

The fourth proportional to 19,345.45, 29,011.56 and 12,728.02 is: 19,087.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,345.45 : 29,011.56 = 12,728.02 : x
  2. Step 2: Convert to fraction form
    19,345.45/29,011.56 = 12,728.02/x
  3. Step 3: Cross multiply
    19,345.45x = 29,011.56 × 12,728.02
  4. Step 4: Simplify right side
    19,345.45x = 369,259,715.91
  5. Step 5: Solve for x
    x = 369,259,715.91/19,345.45
  6. Step 6: Final answer
    x = 19,087.68

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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.