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Finding the Fourth Proportional to 29,038.76, 40,085.72 and 19,620.08

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Solution

The fourth proportional to 29,038.76, 40,085.72 and 19,620.08 is: 27,083.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,038.76 : 40,085.72 = 19,620.08 : x
  2. Step 2: Convert to fraction form
    29,038.76/40,085.72 = 19,620.08/x
  3. Step 3: Cross multiply
    29,038.76x = 40,085.72 × 19,620.08
  4. Step 4: Simplify right side
    29,038.76x = 786,484,734.73
  5. Step 5: Solve for x
    x = 786,484,734.73/29,038.76
  6. Step 6: Final answer
    x = 27,083.97

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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.