Home / 38,715.40-53,425.74-21,948.04

Finding the Fourth Proportional to 38,715.40, 53,425.74 and 21,948.04

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Solution

The fourth proportional to 38,715.40, 53,425.74 and 21,948.04 is: 30,287.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,715.40 : 53,425.74 = 21,948.04 : x
  2. Step 2: Convert to fraction form
    38,715.40/53,425.74 = 21,948.04/x
  3. Step 3: Cross multiply
    38,715.40x = 53,425.74 × 21,948.04
  4. Step 4: Simplify right side
    38,715.40x = 1,172,590,278.55
  5. Step 5: Solve for x
    x = 1,172,590,278.55/38,715.40
  6. Step 6: Final answer
    x = 30,287.44

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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.