Home / 38,612.85-53,281.83-21,615.99

Finding the Fourth Proportional to 38,612.85, 53,281.83 and 21,615.99

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Solution

The fourth proportional to 38,612.85, 53,281.83 and 21,615.99 is: 29,827.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,612.85 : 53,281.83 = 21,615.99 : x
  2. Step 2: Convert to fraction form
    38,612.85/53,281.83 = 21,615.99/x
  3. Step 3: Cross multiply
    38,612.85x = 53,281.83 × 21,615.99
  4. Step 4: Simplify right side
    38,612.85x = 1,151,739,504.46
  5. Step 5: Solve for x
    x = 1,151,739,504.46/38,612.85
  6. Step 6: Final answer
    x = 29,827.88

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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.