Home / 15,552.45-21,461.75-8,478.72

Finding the Fourth Proportional to 15,552.45, 21,461.75 and 8,478.72

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Solution

The fourth proportional to 15,552.45, 21,461.75 and 8,478.72 is: 11,700.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.45 : 21,461.75 = 8,478.72 : x
  2. Step 2: Convert to fraction form
    15,552.45/21,461.75 = 8,478.72/x
  3. Step 3: Cross multiply
    15,552.45x = 21,461.75 × 8,478.72
  4. Step 4: Simplify right side
    15,552.45x = 181,968,126.57
  5. Step 5: Solve for x
    x = 181,968,126.57/15,552.45
  6. Step 6: Final answer
    x = 11,700.29

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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.