Home / 19,856.05-29,784.08-12,465.70

Finding the Fourth Proportional to 19,856.05, 29,784.08 and 12,465.70

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Solution

The fourth proportional to 19,856.05, 29,784.08 and 12,465.70 is: 18,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,856.05 : 29,784.08 = 12,465.70 : x
  2. Step 2: Convert to fraction form
    19,856.05/29,784.08 = 12,465.70/x
  3. Step 3: Cross multiply
    19,856.05x = 29,784.08 × 12,465.70
  4. Step 4: Simplify right side
    19,856.05x = 371,279,362.76
  5. Step 5: Solve for x
    x = 371,279,362.76/19,856.05
  6. Step 6: Final answer
    x = 18,698.55

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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.