Home / 15,572.32-21,484.64-8,857.28

Finding the Fourth Proportional to 15,572.32, 21,484.64 and 8,857.28

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Solution

The fourth proportional to 15,572.32, 21,484.64 and 8,857.28 is: 12,220.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.32 : 21,484.64 = 8,857.28 : x
  2. Step 2: Convert to fraction form
    15,572.32/21,484.64 = 8,857.28/x
  3. Step 3: Cross multiply
    15,572.32x = 21,484.64 × 8,857.28
  4. Step 4: Simplify right side
    15,572.32x = 190,295,472.18
  5. Step 5: Solve for x
    x = 190,295,472.18/15,572.32
  6. Step 6: Final answer
    x = 12,220.11

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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.