Home / 15,190.86-20,939.51-10,402.52

Finding the Fourth Proportional to 15,190.86, 20,939.51 and 10,402.52

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Solution

The fourth proportional to 15,190.86, 20,939.51 and 10,402.52 is: 14,339.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,190.86 : 20,939.51 = 10,402.52 : x
  2. Step 2: Convert to fraction form
    15,190.86/20,939.51 = 10,402.52/x
  3. Step 3: Cross multiply
    15,190.86x = 20,939.51 × 10,402.52
  4. Step 4: Simplify right side
    15,190.86x = 217,823,749.92
  5. Step 5: Solve for x
    x = 217,823,749.92/15,190.86
  6. Step 6: Final answer
    x = 14,339.13

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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.