Home / 21,204.45-31,812.84-8,547.68

Finding the Fourth Proportional to 21,204.45, 31,812.84 and 8,547.68

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Solution

The fourth proportional to 21,204.45, 31,812.84 and 8,547.68 is: 12,824.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.45 : 31,812.84 = 8,547.68 : x
  2. Step 2: Convert to fraction form
    21,204.45/31,812.84 = 8,547.68/x
  3. Step 3: Cross multiply
    21,204.45x = 31,812.84 × 8,547.68
  4. Step 4: Simplify right side
    21,204.45x = 271,925,858.60
  5. Step 5: Solve for x
    x = 271,925,858.60/21,204.45
  6. Step 6: Final answer
    x = 12,824.00

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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.