Home / 20,168.86-30,259.44-10,315.06

Finding the Fourth Proportional to 20,168.86, 30,259.44 and 10,315.06

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Solution

The fourth proportional to 20,168.86, 30,259.44 and 10,315.06 is: 15,475.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.86 : 30,259.44 = 10,315.06 : x
  2. Step 2: Convert to fraction form
    20,168.86/30,259.44 = 10,315.06/x
  3. Step 3: Cross multiply
    20,168.86x = 30,259.44 × 10,315.06
  4. Step 4: Simplify right side
    20,168.86x = 312,127,939.17
  5. Step 5: Solve for x
    x = 312,127,939.17/20,168.86
  6. Step 6: Final answer
    x = 15,475.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.