Home / 14,612.32-21,918.28-9,920.72

Finding the Fourth Proportional to 14,612.32, 21,918.28 and 9,920.72

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Solution

The fourth proportional to 14,612.32, 21,918.28 and 9,920.72 is: 14,880.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,612.32 : 21,918.28 = 9,920.72 : x
  2. Step 2: Convert to fraction form
    14,612.32/21,918.28 = 9,920.72/x
  3. Step 3: Cross multiply
    14,612.32x = 21,918.28 × 9,920.72
  4. Step 4: Simplify right side
    14,612.32x = 217,445,118.76
  5. Step 5: Solve for x
    x = 217,445,118.76/14,612.32
  6. Step 6: Final answer
    x = 14,880.94

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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.