Home / 15,628.98-21,568.59-8,915.70

Finding the Fourth Proportional to 15,628.98, 21,568.59 and 8,915.70

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Solution

The fourth proportional to 15,628.98, 21,568.59 and 8,915.70 is: 12,304.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.98 : 21,568.59 = 8,915.70 : x
  2. Step 2: Convert to fraction form
    15,628.98/21,568.59 = 8,915.70/x
  3. Step 3: Cross multiply
    15,628.98x = 21,568.59 × 8,915.70
  4. Step 4: Simplify right side
    15,628.98x = 192,299,077.86
  5. Step 5: Solve for x
    x = 192,299,077.86/15,628.98
  6. Step 6: Final answer
    x = 12,304.01

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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.