Home / 20,746.56-31,108.80-8,260.16

Finding the Fourth Proportional to 20,746.56, 31,108.80 and 8,260.16

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Solution

The fourth proportional to 20,746.56, 31,108.80 and 8,260.16 is: 12,385.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.56 : 31,108.80 = 8,260.16 : x
  2. Step 2: Convert to fraction form
    20,746.56/31,108.80 = 8,260.16/x
  3. Step 3: Cross multiply
    20,746.56x = 31,108.80 × 8,260.16
  4. Step 4: Simplify right side
    20,746.56x = 256,963,665.41
  5. Step 5: Solve for x
    x = 256,963,665.41/20,746.56
  6. Step 6: Final answer
    x = 12,385.84

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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.