Home / 13,948.48-20,913-8,680.24

Finding the Fourth Proportional to 13,948.48, 20,913 and 8,680.24

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Solution

The fourth proportional to 13,948.48, 20,913 and 8,680.24 is: 13,014.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,948.48 : 20,913 = 8,680.24 : x
  2. Step 2: Convert to fraction form
    13,948.48/20,913 = 8,680.24/x
  3. Step 3: Cross multiply
    13,948.48x = 20,913 × 8,680.24
  4. Step 4: Simplify right side
    13,948.48x = 181,529,859.12
  5. Step 5: Solve for x
    x = 181,529,859.12/13,948.48
  6. Step 6: Final answer
    x = 13,014.31

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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.