Home / 33,430.60-46,128.18-21,491.20

Finding the Fourth Proportional to 33,430.60, 46,128.18 and 21,491.20

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Solution

The fourth proportional to 33,430.60, 46,128.18 and 21,491.20 is: 29,653.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,430.60 : 46,128.18 = 21,491.20 : x
  2. Step 2: Convert to fraction form
    33,430.60/46,128.18 = 21,491.20/x
  3. Step 3: Cross multiply
    33,430.60x = 46,128.18 × 21,491.20
  4. Step 4: Simplify right side
    33,430.60x = 991,349,942.02
  5. Step 5: Solve for x
    x = 991,349,942.02/33,430.60
  6. Step 6: Final answer
    x = 29,653.97

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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.