Home / 39,431.34-54,416.07-21,526.56

Finding the Fourth Proportional to 39,431.34, 54,416.07 and 21,526.56

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Solution

The fourth proportional to 39,431.34, 54,416.07 and 21,526.56 is: 29,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.34 : 54,416.07 = 21,526.56 : x
  2. Step 2: Convert to fraction form
    39,431.34/54,416.07 = 21,526.56/x
  3. Step 3: Cross multiply
    39,431.34x = 54,416.07 × 21,526.56
  4. Step 4: Simplify right side
    39,431.34x = 1,171,390,795.82
  5. Step 5: Solve for x
    x = 1,171,390,795.82/39,431.34
  6. Step 6: Final answer
    x = 29,707.10

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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.