Home / 30,979.64-42,752.54-16,833.40

Finding the Fourth Proportional to 30,979.64, 42,752.54 and 16,833.40

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Solution

The fourth proportional to 30,979.64, 42,752.54 and 16,833.40 is: 23,230.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.64 : 42,752.54 = 16,833.40 : x
  2. Step 2: Convert to fraction form
    30,979.64/42,752.54 = 16,833.40/x
  3. Step 3: Cross multiply
    30,979.64x = 42,752.54 × 16,833.40
  4. Step 4: Simplify right side
    30,979.64x = 719,670,606.84
  5. Step 5: Solve for x
    x = 719,670,606.84/30,979.64
  6. Step 6: Final answer
    x = 23,230.44

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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.