Home / 38,718.84-53,438.22-21,957.24

Finding the Fourth Proportional to 38,718.84, 53,438.22 and 21,957.24

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Solution

The fourth proportional to 38,718.84, 53,438.22 and 21,957.24 is: 30,304.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,718.84 : 53,438.22 = 21,957.24 : x
  2. Step 2: Convert to fraction form
    38,718.84/53,438.22 = 21,957.24/x
  3. Step 3: Cross multiply
    38,718.84x = 53,438.22 × 21,957.24
  4. Step 4: Simplify right side
    38,718.84x = 1,173,355,821.71
  5. Step 5: Solve for x
    x = 1,173,355,821.71/38,718.84
  6. Step 6: Final answer
    x = 30,304.52

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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.