Home / 15,657.27-21,478.32-14,809.86

Finding the Fourth Proportional to 15,657.27, 21,478.32 and 14,809.86

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Solution

The fourth proportional to 15,657.27, 21,478.32 and 14,809.86 is: 20,315.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.27 : 21,478.32 = 14,809.86 : x
  2. Step 2: Convert to fraction form
    15,657.27/21,478.32 = 14,809.86/x
  3. Step 3: Cross multiply
    15,657.27x = 21,478.32 × 14,809.86
  4. Step 4: Simplify right side
    15,657.27x = 318,090,912.24
  5. Step 5: Solve for x
    x = 318,090,912.24/15,657.27
  6. Step 6: Final answer
    x = 20,315.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.