Home / 15,113.56-20,856.21-8,398.93

Finding the Fourth Proportional to 15,113.56, 20,856.21 and 8,398.93

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Solution

The fourth proportional to 15,113.56, 20,856.21 and 8,398.93 is: 11,590.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113.56 : 20,856.21 = 8,398.93 : x
  2. Step 2: Convert to fraction form
    15,113.56/20,856.21 = 8,398.93/x
  3. Step 3: Cross multiply
    15,113.56x = 20,856.21 × 8,398.93
  4. Step 4: Simplify right side
    15,113.56x = 175,169,847.86
  5. Step 5: Solve for x
    x = 175,169,847.86/15,113.56
  6. Step 6: Final answer
    x = 11,590.24

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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.