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Finding the Fourth Proportional to 18,300.48, 25,254.65 and 9,916.98

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Solution

The fourth proportional to 18,300.48, 25,254.65 and 9,916.98 is: 13,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.48 : 25,254.65 = 9,916.98 : x
  2. Step 2: Convert to fraction form
    18,300.48/25,254.65 = 9,916.98/x
  3. Step 3: Cross multiply
    18,300.48x = 25,254.65 × 9,916.98
  4. Step 4: Simplify right side
    18,300.48x = 250,449,809.37
  5. Step 5: Solve for x
    x = 250,449,809.37/18,300.48
  6. Step 6: Final answer
    x = 13,685.42

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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.