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Finding the Fourth Proportional to 18,875.78, 26,048.01 and 10,809.17

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Solution

The fourth proportional to 18,875.78, 26,048.01 and 10,809.17 is: 14,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,875.78 : 26,048.01 = 10,809.17 : x
  2. Step 2: Convert to fraction form
    18,875.78/26,048.01 = 10,809.17/x
  3. Step 3: Cross multiply
    18,875.78x = 26,048.01 × 10,809.17
  4. Step 4: Simplify right side
    18,875.78x = 281,557,238.01
  5. Step 5: Solve for x
    x = 281,557,238.01/18,875.78
  6. Step 6: Final answer
    x = 14,916.33

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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.