Home / 39,113.40-53,976.54-21,208.32

Finding the Fourth Proportional to 39,113.40, 53,976.54 and 21,208.32

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Solution

The fourth proportional to 39,113.40, 53,976.54 and 21,208.32 is: 29,267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,113.40 : 53,976.54 = 21,208.32 : x
  2. Step 2: Convert to fraction form
    39,113.40/53,976.54 = 21,208.32/x
  3. Step 3: Cross multiply
    39,113.40x = 53,976.54 × 21,208.32
  4. Step 4: Simplify right side
    39,113.40x = 1,144,751,732.81
  5. Step 5: Solve for x
    x = 1,144,751,732.81/39,113.40
  6. Step 6: Final answer
    x = 29,267.51

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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.