Home / 18,928.61-26,120.65-10,856.51

Finding the Fourth Proportional to 18,928.61, 26,120.65 and 10,856.51

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Solution

The fourth proportional to 18,928.61, 26,120.65 and 10,856.51 is: 14,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.61 : 26,120.65 = 10,856.51 : x
  2. Step 2: Convert to fraction form
    18,928.61/26,120.65 = 10,856.51/x
  3. Step 3: Cross multiply
    18,928.61x = 26,120.65 × 10,856.51
  4. Step 4: Simplify right side
    18,928.61x = 283,579,015.56
  5. Step 5: Solve for x
    x = 283,579,015.56/18,928.61
  6. Step 6: Final answer
    x = 14,981.50

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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.