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Finding the Fourth Proportional to 38,329.40, 57,496.80 and 21,697.40

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Solution

The fourth proportional to 38,329.40, 57,496.80 and 21,697.40 is: 32,547.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,329.40 : 57,496.80 = 21,697.40 : x
  2. Step 2: Convert to fraction form
    38,329.40/57,496.80 = 21,697.40/x
  3. Step 3: Cross multiply
    38,329.40x = 57,496.80 × 21,697.40
  4. Step 4: Simplify right side
    38,329.40x = 1,247,531,068.32
  5. Step 5: Solve for x
    x = 1,247,531,068.32/38,329.40
  6. Step 6: Final answer
    x = 32,547.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.