Home / 19,856.86-27,401.40-10,905.58

Finding the Fourth Proportional to 19,856.86, 27,401.40 and 10,905.58

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Solution

The fourth proportional to 19,856.86, 27,401.40 and 10,905.58 is: 15,049.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,856.86 : 27,401.40 = 10,905.58 : x
  2. Step 2: Convert to fraction form
    19,856.86/27,401.40 = 10,905.58/x
  3. Step 3: Cross multiply
    19,856.86x = 27,401.40 × 10,905.58
  4. Step 4: Simplify right side
    19,856.86x = 298,828,159.81
  5. Step 5: Solve for x
    x = 298,828,159.81/19,856.86
  6. Step 6: Final answer
    x = 15,049.11

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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.