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Finding the Fourth Proportional to 30,482.64, 42,065.68 and 17,053.68

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Solution

The fourth proportional to 30,482.64, 42,065.68 and 17,053.68 is: 23,533.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,482.64 : 42,065.68 = 17,053.68 : x
  2. Step 2: Convert to fraction form
    30,482.64/42,065.68 = 17,053.68/x
  3. Step 3: Cross multiply
    30,482.64x = 42,065.68 × 17,053.68
  4. Step 4: Simplify right side
    30,482.64x = 717,374,645.70
  5. Step 5: Solve for x
    x = 717,374,645.70/30,482.64
  6. Step 6: Final answer
    x = 23,533.88

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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.