Home / 38,425.78-53,027.48-21,430.05

Finding the Fourth Proportional to 38,425.78, 53,027.48 and 21,430.05

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Solution

The fourth proportional to 38,425.78, 53,027.48 and 21,430.05 is: 29,573.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,425.78 : 53,027.48 = 21,430.05 : x
  2. Step 2: Convert to fraction form
    38,425.78/53,027.48 = 21,430.05/x
  3. Step 3: Cross multiply
    38,425.78x = 53,027.48 × 21,430.05
  4. Step 4: Simplify right side
    38,425.78x = 1,136,381,175.49
  5. Step 5: Solve for x
    x = 1,136,381,175.49/38,425.78
  6. Step 6: Final answer
    x = 29,573.41

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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.