Home / 15,823.78-21,837.10-8,750.24

Finding the Fourth Proportional to 15,823.78, 21,837.10 and 8,750.24

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Solution

The fourth proportional to 15,823.78, 21,837.10 and 8,750.24 is: 12,075.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.78 : 21,837.10 = 8,750.24 : x
  2. Step 2: Convert to fraction form
    15,823.78/21,837.10 = 8,750.24/x
  3. Step 3: Cross multiply
    15,823.78x = 21,837.10 × 8,750.24
  4. Step 4: Simplify right side
    15,823.78x = 191,079,865.90
  5. Step 5: Solve for x
    x = 191,079,865.90/15,823.78
  6. Step 6: Final answer
    x = 12,075.49

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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.