Home / 15,087.53-20,820.39-8,799.50

Finding the Fourth Proportional to 15,087.53, 20,820.39 and 8,799.50

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Solution

The fourth proportional to 15,087.53, 20,820.39 and 8,799.50 is: 12,143.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,087.53 : 20,820.39 = 8,799.50 : x
  2. Step 2: Convert to fraction form
    15,087.53/20,820.39 = 8,799.50/x
  3. Step 3: Cross multiply
    15,087.53x = 20,820.39 × 8,799.50
  4. Step 4: Simplify right side
    15,087.53x = 183,209,021.81
  5. Step 5: Solve for x
    x = 183,209,021.81/15,087.53
  6. Step 6: Final answer
    x = 12,143.08

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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.