Home / 38,429.60-53,033.30-21,435.32

Finding the Fourth Proportional to 38,429.60, 53,033.30 and 21,435.32

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Solution

The fourth proportional to 38,429.60, 53,033.30 and 21,435.32 is: 29,580.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,429.60 : 53,033.30 = 21,435.32 : x
  2. Step 2: Convert to fraction form
    38,429.60/53,033.30 = 21,435.32/x
  3. Step 3: Cross multiply
    38,429.60x = 53,033.30 × 21,435.32
  4. Step 4: Simplify right side
    38,429.60x = 1,136,785,563.63
  5. Step 5: Solve for x
    x = 1,136,785,563.63/38,429.60
  6. Step 6: Final answer
    x = 29,580.99

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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.