Home / 39,301.79-54,237.44-21,397.77

Finding the Fourth Proportional to 39,301.79, 54,237.44 and 21,397.77

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Solution

The fourth proportional to 39,301.79, 54,237.44 and 21,397.77 is: 29,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,301.79 : 54,237.44 = 21,397.77 : x
  2. Step 2: Convert to fraction form
    39,301.79/54,237.44 = 21,397.77/x
  3. Step 3: Cross multiply
    39,301.79x = 54,237.44 × 21,397.77
  4. Step 4: Simplify right side
    39,301.79x = 1,160,560,159.52
  5. Step 5: Solve for x
    x = 1,160,560,159.52/39,301.79
  6. Step 6: Final answer
    x = 29,529.45

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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.