Home / 14,938.40-20,621-10,908.86

Finding the Fourth Proportional to 14,938.40, 20,621 and 10,908.86

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Solution

The fourth proportional to 14,938.40, 20,621 and 10,908.86 is: 15,058.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,938.40 : 20,621 = 10,908.86 : x
  2. Step 2: Convert to fraction form
    14,938.40/20,621 = 10,908.86/x
  3. Step 3: Cross multiply
    14,938.40x = 20,621 × 10,908.86
  4. Step 4: Simplify right side
    14,938.40x = 224,951,602.06
  5. Step 5: Solve for x
    x = 224,951,602.06/14,938.40
  6. Step 6: Final answer
    x = 15,058.61

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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.