Home / 39,340.09-54,288.63-21,435.24

Finding the Fourth Proportional to 39,340.09, 54,288.63 and 21,435.24

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Solution

The fourth proportional to 39,340.09, 54,288.63 and 21,435.24 is: 29,580.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.09 : 54,288.63 = 21,435.24 : x
  2. Step 2: Convert to fraction form
    39,340.09/54,288.63 = 21,435.24/x
  3. Step 3: Cross multiply
    39,340.09x = 54,288.63 × 21,435.24
  4. Step 4: Simplify right side
    39,340.09x = 1,163,689,813.32
  5. Step 5: Solve for x
    x = 1,163,689,813.32/39,340.09
  6. Step 6: Final answer
    x = 29,580.26

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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.