Home / 38,987.86-53,803.27-21,082.87

Finding the Fourth Proportional to 38,987.86, 53,803.27 and 21,082.87

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Solution

The fourth proportional to 38,987.86, 53,803.27 and 21,082.87 is: 29,094.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,987.86 : 53,803.27 = 21,082.87 : x
  2. Step 2: Convert to fraction form
    38,987.86/53,803.27 = 21,082.87/x
  3. Step 3: Cross multiply
    38,987.86x = 53,803.27 × 21,082.87
  4. Step 4: Simplify right side
    38,987.86x = 1,134,327,346.98
  5. Step 5: Solve for x
    x = 1,134,327,346.98/38,987.86
  6. Step 6: Final answer
    x = 29,094.37

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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.