Home / 15,289.15-21,100.04-8,575.21

Finding the Fourth Proportional to 15,289.15, 21,100.04 and 8,575.21

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Solution

The fourth proportional to 15,289.15, 21,100.04 and 8,575.21 is: 11,834.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.15 : 21,100.04 = 8,575.21 : x
  2. Step 2: Convert to fraction form
    15,289.15/21,100.04 = 8,575.21/x
  3. Step 3: Cross multiply
    15,289.15x = 21,100.04 × 8,575.21
  4. Step 4: Simplify right side
    15,289.15x = 180,937,274.01
  5. Step 5: Solve for x
    x = 180,937,274.01/15,289.15
  6. Step 6: Final answer
    x = 11,834.36

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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.