Home / 30,583.02-42,160.33-21,480.74

Finding the Fourth Proportional to 30,583.02, 42,160.33 and 21,480.74

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Solution

The fourth proportional to 30,583.02, 42,160.33 and 21,480.74 is: 29,612.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,583.02 : 42,160.33 = 21,480.74 : x
  2. Step 2: Convert to fraction form
    30,583.02/42,160.33 = 21,480.74/x
  3. Step 3: Cross multiply
    30,583.02x = 42,160.33 × 21,480.74
  4. Step 4: Simplify right side
    30,583.02x = 905,635,087.04
  5. Step 5: Solve for x
    x = 905,635,087.04/30,583.02
  6. Step 6: Final answer
    x = 29,612.35

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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.