Home / 20,837.28-28,712.86-14,856.24

Finding the Fourth Proportional to 20,837.28, 28,712.86 and 14,856.24

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Solution

The fourth proportional to 20,837.28, 28,712.86 and 14,856.24 is: 20,471.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.28 : 28,712.86 = 14,856.24 : x
  2. Step 2: Convert to fraction form
    20,837.28/28,712.86 = 14,856.24/x
  3. Step 3: Cross multiply
    20,837.28x = 28,712.86 × 14,856.24
  4. Step 4: Simplify right side
    20,837.28x = 426,565,139.25
  5. Step 5: Solve for x
    x = 426,565,139.25/20,837.28
  6. Step 6: Final answer
    x = 20,471.25

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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.