Home / 28,018.24-42,029.78-9,294.28

Finding the Fourth Proportional to 28,018.24, 42,029.78 and 9,294.28

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Solution

The fourth proportional to 28,018.24, 42,029.78 and 9,294.28 is: 13,942.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.24 : 42,029.78 = 9,294.28 : x
  2. Step 2: Convert to fraction form
    28,018.24/42,029.78 = 9,294.28/x
  3. Step 3: Cross multiply
    28,018.24x = 42,029.78 × 9,294.28
  4. Step 4: Simplify right side
    28,018.24x = 390,636,543.66
  5. Step 5: Solve for x
    x = 390,636,543.66/28,018.24
  6. Step 6: Final answer
    x = 13,942.22

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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.