Home / 27,989.56-38,623.98-16,809.40

Finding the Fourth Proportional to 27,989.56, 38,623.98 and 16,809.40

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Solution

The fourth proportional to 27,989.56, 38,623.98 and 16,809.40 is: 23,196.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,989.56 : 38,623.98 = 16,809.40 : x
  2. Step 2: Convert to fraction form
    27,989.56/38,623.98 = 16,809.40/x
  3. Step 3: Cross multiply
    27,989.56x = 38,623.98 × 16,809.40
  4. Step 4: Simplify right side
    27,989.56x = 649,245,929.41
  5. Step 5: Solve for x
    x = 649,245,929.41/27,989.56
  6. Step 6: Final answer
    x = 23,196.00

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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.