Home / 15,088.07-20,821.25-8,373.78

Finding the Fourth Proportional to 15,088.07, 20,821.25 and 8,373.78

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Solution

The fourth proportional to 15,088.07, 20,821.25 and 8,373.78 is: 11,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.07 : 20,821.25 = 8,373.78 : x
  2. Step 2: Convert to fraction form
    15,088.07/20,821.25 = 8,373.78/x
  3. Step 3: Cross multiply
    15,088.07x = 20,821.25 × 8,373.78
  4. Step 4: Simplify right side
    15,088.07x = 174,352,587.76
  5. Step 5: Solve for x
    x = 174,352,587.76/15,088.07
  6. Step 6: Final answer
    x = 11,555.66

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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.