Home / 38,990.53-53,806.88-21,085.49

Finding the Fourth Proportional to 38,990.53, 53,806.88 and 21,085.49

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Solution

The fourth proportional to 38,990.53, 53,806.88 and 21,085.49 is: 29,097.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.53 : 53,806.88 = 21,085.49 : x
  2. Step 2: Convert to fraction form
    38,990.53/53,806.88 = 21,085.49/x
  3. Step 3: Cross multiply
    38,990.53x = 53,806.88 × 21,085.49
  4. Step 4: Simplify right side
    38,990.53x = 1,134,544,430.17
  5. Step 5: Solve for x
    x = 1,134,544,430.17/38,990.53
  6. Step 6: Final answer
    x = 29,097.95

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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.