Home / 28,018.41-38,667.83-15,445.59

Finding the Fourth Proportional to 28,018.41, 38,667.83 and 15,445.59

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Solution

The fourth proportional to 28,018.41, 38,667.83 and 15,445.59 is: 21,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.41 : 38,667.83 = 15,445.59 : x
  2. Step 2: Convert to fraction form
    28,018.41/38,667.83 = 15,445.59/x
  3. Step 3: Cross multiply
    28,018.41x = 38,667.83 × 15,445.59
  4. Step 4: Simplify right side
    28,018.41x = 597,247,313.02
  5. Step 5: Solve for x
    x = 597,247,313.02/28,018.41
  6. Step 6: Final answer
    x = 21,316.25

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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.