Home / 28,856.32-39,798.64-19,901.76

Finding the Fourth Proportional to 28,856.32, 39,798.64 and 19,901.76

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Solution

The fourth proportional to 28,856.32, 39,798.64 and 19,901.76 is: 27,448.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.32 : 39,798.64 = 19,901.76 : x
  2. Step 2: Convert to fraction form
    28,856.32/39,798.64 = 19,901.76/x
  3. Step 3: Cross multiply
    28,856.32x = 39,798.64 × 19,901.76
  4. Step 4: Simplify right side
    28,856.32x = 792,062,981.61
  5. Step 5: Solve for x
    x = 792,062,981.61/28,856.32
  6. Step 6: Final answer
    x = 27,448.51

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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.