Home / 28,256.10-42,384.14-22,020.78

Finding the Fourth Proportional to 28,256.10, 42,384.14 and 22,020.78

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Solution

The fourth proportional to 28,256.10, 42,384.14 and 22,020.78 is: 33,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.10 : 42,384.14 = 22,020.78 : x
  2. Step 2: Convert to fraction form
    28,256.10/42,384.14 = 22,020.78/x
  3. Step 3: Cross multiply
    28,256.10x = 42,384.14 × 22,020.78
  4. Step 4: Simplify right side
    28,256.10x = 933,331,822.43
  5. Step 5: Solve for x
    x = 933,331,822.43/28,256.10
  6. Step 6: Final answer
    x = 33,031.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.