Home / 15,603.21-21,532.32-8,889.12

Finding the Fourth Proportional to 15,603.21, 21,532.32 and 8,889.12

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Solution

The fourth proportional to 15,603.21, 21,532.32 and 8,889.12 is: 12,266.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.21 : 21,532.32 = 8,889.12 : x
  2. Step 2: Convert to fraction form
    15,603.21/21,532.32 = 8,889.12/x
  3. Step 3: Cross multiply
    15,603.21x = 21,532.32 × 8,889.12
  4. Step 4: Simplify right side
    15,603.21x = 191,403,376.36
  5. Step 5: Solve for x
    x = 191,403,376.36/15,603.21
  6. Step 6: Final answer
    x = 12,266.92

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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.