Home / 29,920.32-41,271.12-21,405.60

Finding the Fourth Proportional to 29,920.32, 41,271.12 and 21,405.60

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Solution

The fourth proportional to 29,920.32, 41,271.12 and 21,405.60 is: 29,526.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,920.32 : 41,271.12 = 21,405.60 : x
  2. Step 2: Convert to fraction form
    29,920.32/41,271.12 = 21,405.60/x
  3. Step 3: Cross multiply
    29,920.32x = 41,271.12 × 21,405.60
  4. Step 4: Simplify right side
    29,920.32x = 883,433,086.27
  5. Step 5: Solve for x
    x = 883,433,086.27/29,920.32
  6. Step 6: Final answer
    x = 29,526.19

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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.