Home / 14,388.64-21,577.28-6,990.91

Finding the Fourth Proportional to 14,388.64, 21,577.28 and 6,990.91

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Solution

The fourth proportional to 14,388.64, 21,577.28 and 6,990.91 is: 10,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,388.64 : 21,577.28 = 6,990.91 : x
  2. Step 2: Convert to fraction form
    14,388.64/21,577.28 = 6,990.91/x
  3. Step 3: Cross multiply
    14,388.64x = 21,577.28 × 6,990.91
  4. Step 4: Simplify right side
    14,388.64x = 150,844,714.64
  5. Step 5: Solve for x
    x = 150,844,714.64/14,388.64
  6. Step 6: Final answer
    x = 10,483.60

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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.