Home / 15,671.07-21,636.32-9,711.50

Finding the Fourth Proportional to 15,671.07, 21,636.32 and 9,711.50

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Solution

The fourth proportional to 15,671.07, 21,636.32 and 9,711.50 is: 13,408.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671.07 : 21,636.32 = 9,711.50 : x
  2. Step 2: Convert to fraction form
    15,671.07/21,636.32 = 9,711.50/x
  3. Step 3: Cross multiply
    15,671.07x = 21,636.32 × 9,711.50
  4. Step 4: Simplify right side
    15,671.07x = 210,120,964.94
  5. Step 5: Solve for x
    x = 210,120,964.94/15,671.07
  6. Step 6: Final answer
    x = 13,408.21

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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.