Home / 21,979.64-32,938.74-10,263.80

Finding the Fourth Proportional to 21,979.64, 32,938.74 and 10,263.80

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Solution

The fourth proportional to 21,979.64, 32,938.74 and 10,263.80 is: 15,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.64 : 32,938.74 = 10,263.80 : x
  2. Step 2: Convert to fraction form
    21,979.64/32,938.74 = 10,263.80/x
  3. Step 3: Cross multiply
    21,979.64x = 32,938.74 × 10,263.80
  4. Step 4: Simplify right side
    21,979.64x = 338,076,639.61
  5. Step 5: Solve for x
    x = 338,076,639.61/21,979.64
  6. Step 6: Final answer
    x = 15,381.35

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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.