Home / 30,974.96-42,746.28-16,828.76

Finding the Fourth Proportional to 30,974.96, 42,746.28 and 16,828.76

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Solution

The fourth proportional to 30,974.96, 42,746.28 and 16,828.76 is: 23,224.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,974.96 : 42,746.28 = 16,828.76 : x
  2. Step 2: Convert to fraction form
    30,974.96/42,746.28 = 16,828.76/x
  3. Step 3: Cross multiply
    30,974.96x = 42,746.28 × 16,828.76
  4. Step 4: Simplify right side
    30,974.96x = 719,366,887.01
  5. Step 5: Solve for x
    x = 719,366,887.01/30,974.96
  6. Step 6: Final answer
    x = 23,224.14

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Half scale
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Double scale
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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.