Home / 30,557.92-42,169.12-17,130.05

Finding the Fourth Proportional to 30,557.92, 42,169.12 and 17,130.05

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Solution

The fourth proportional to 30,557.92, 42,169.12 and 17,130.05 is: 23,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.92 : 42,169.12 = 17,130.05 : x
  2. Step 2: Convert to fraction form
    30,557.92/42,169.12 = 17,130.05/x
  3. Step 3: Cross multiply
    30,557.92x = 42,169.12 × 17,130.05
  4. Step 4: Simplify right side
    30,557.92x = 722,358,923.21
  5. Step 5: Solve for x
    x = 722,358,923.21/30,557.92
  6. Step 6: Final answer
    x = 23,639.01

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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.