Home / 30,903.26-42,641.44-20,306.03

Finding the Fourth Proportional to 30,903.26, 42,641.44 and 20,306.03

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Solution

The fourth proportional to 30,903.26, 42,641.44 and 20,306.03 is: 28,018.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,903.26 : 42,641.44 = 20,306.03 : x
  2. Step 2: Convert to fraction form
    30,903.26/42,641.44 = 20,306.03/x
  3. Step 3: Cross multiply
    30,903.26x = 42,641.44 × 20,306.03
  4. Step 4: Simplify right side
    30,903.26x = 865,878,095.91
  5. Step 5: Solve for x
    x = 865,878,095.91/30,903.26
  6. Step 6: Final answer
    x = 28,018.99

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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.