Home / 15,476.86-21,358.11-8,403.40

Finding the Fourth Proportional to 15,476.86, 21,358.11 and 8,403.40

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Solution

The fourth proportional to 15,476.86, 21,358.11 and 8,403.40 is: 11,596.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.86 : 21,358.11 = 8,403.40 : x
  2. Step 2: Convert to fraction form
    15,476.86/21,358.11 = 8,403.40/x
  3. Step 3: Cross multiply
    15,476.86x = 21,358.11 × 8,403.40
  4. Step 4: Simplify right side
    15,476.86x = 179,480,741.57
  5. Step 5: Solve for x
    x = 179,480,741.57/15,476.86
  6. Step 6: Final answer
    x = 11,596.72

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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.