Home / 21,563.64-29,756.70-12,612.06

Finding the Fourth Proportional to 21,563.64, 29,756.70 and 12,612.06

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Solution

The fourth proportional to 21,563.64, 29,756.70 and 12,612.06 is: 17,403.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,563.64 : 29,756.70 = 12,612.06 : x
  2. Step 2: Convert to fraction form
    21,563.64/29,756.70 = 12,612.06/x
  3. Step 3: Cross multiply
    21,563.64x = 29,756.70 × 12,612.06
  4. Step 4: Simplify right side
    21,563.64x = 375,293,285.80
  5. Step 5: Solve for x
    x = 375,293,285.80/21,563.64
  6. Step 6: Final answer
    x = 17,403.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.