Home / 15,988.86-22,065.03-8,915.22

Finding the Fourth Proportional to 15,988.86, 22,065.03 and 8,915.22

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Solution

The fourth proportional to 15,988.86, 22,065.03 and 8,915.22 is: 12,303.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.86 : 22,065.03 = 8,915.22 : x
  2. Step 2: Convert to fraction form
    15,988.86/22,065.03 = 8,915.22/x
  3. Step 3: Cross multiply
    15,988.86x = 22,065.03 × 8,915.22
  4. Step 4: Simplify right side
    15,988.86x = 196,714,596.76
  5. Step 5: Solve for x
    x = 196,714,596.76/15,988.86
  6. Step 6: Final answer
    x = 12,303.23

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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.