Home / 38,628.51-53,302.94-21,630.39

Finding the Fourth Proportional to 38,628.51, 53,302.94 and 21,630.39

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Solution

The fourth proportional to 38,628.51, 53,302.94 and 21,630.39 is: 29,847.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,628.51 : 53,302.94 = 21,630.39 : x
  2. Step 2: Convert to fraction form
    38,628.51/53,302.94 = 21,630.39/x
  3. Step 3: Cross multiply
    38,628.51x = 53,302.94 × 21,630.39
  4. Step 4: Simplify right side
    38,628.51x = 1,152,963,272.19
  5. Step 5: Solve for x
    x = 1,152,963,272.19/38,628.51
  6. Step 6: Final answer
    x = 29,847.47

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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.