Home / 15,603.32-21,530.08-8,889.06

Finding the Fourth Proportional to 15,603.32, 21,530.08 and 8,889.06

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Solution

The fourth proportional to 15,603.32, 21,530.08 and 8,889.06 is: 12,265.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.32 : 21,530.08 = 8,889.06 : x
  2. Step 2: Convert to fraction form
    15,603.32/21,530.08 = 8,889.06/x
  3. Step 3: Cross multiply
    15,603.32x = 21,530.08 × 8,889.06
  4. Step 4: Simplify right side
    15,603.32x = 191,382,172.92
  5. Step 5: Solve for x
    x = 191,382,172.92/15,603.32
  6. Step 6: Final answer
    x = 12,265.48

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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.