Home / 28,490.88-42,678.90-23,857.20

Finding the Fourth Proportional to 28,490.88, 42,678.90 and 23,857.20

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Solution

The fourth proportional to 28,490.88, 42,678.90 and 23,857.20 is: 35,737.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.88 : 42,678.90 = 23,857.20 : x
  2. Step 2: Convert to fraction form
    28,490.88/42,678.90 = 23,857.20/x
  3. Step 3: Cross multiply
    28,490.88x = 42,678.90 × 23,857.20
  4. Step 4: Simplify right side
    28,490.88x = 1,018,199,053.08
  5. Step 5: Solve for x
    x = 1,018,199,053.08/28,490.88
  6. Step 6: Final answer
    x = 35,737.72

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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.