Home / 39,430.15-54,412.85-21,525.28

Finding the Fourth Proportional to 39,430.15, 54,412.85 and 21,525.28

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Solution

The fourth proportional to 39,430.15, 54,412.85 and 21,525.28 is: 29,704.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,430.15 : 54,412.85 = 21,525.28 : x
  2. Step 2: Convert to fraction form
    39,430.15/54,412.85 = 21,525.28/x
  3. Step 3: Cross multiply
    39,430.15x = 54,412.85 × 21,525.28
  4. Step 4: Simplify right side
    39,430.15x = 1,171,251,831.85
  5. Step 5: Solve for x
    x = 1,171,251,831.85/39,430.15
  6. Step 6: Final answer
    x = 29,704.47

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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.