Home / 38,987.53-53,802.74-21,082.49

Finding the Fourth Proportional to 38,987.53, 53,802.74 and 21,082.49

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Solution

The fourth proportional to 38,987.53, 53,802.74 and 21,082.49 is: 29,093.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,987.53 : 53,802.74 = 21,082.49 : x
  2. Step 2: Convert to fraction form
    38,987.53/53,802.74 = 21,082.49/x
  3. Step 3: Cross multiply
    38,987.53x = 53,802.74 × 21,082.49
  4. Step 4: Simplify right side
    38,987.53x = 1,134,295,728.02
  5. Step 5: Solve for x
    x = 1,134,295,728.02/38,987.53
  6. Step 6: Final answer
    x = 29,093.81

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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.