Home / 30,570.64-42,186-17,143.36

Finding the Fourth Proportional to 30,570.64, 42,186 and 17,143.36

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Solution

The fourth proportional to 30,570.64, 42,186 and 17,143.36 is: 23,657.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,570.64 : 42,186 = 17,143.36 : x
  2. Step 2: Convert to fraction form
    30,570.64/42,186 = 17,143.36/x
  3. Step 3: Cross multiply
    30,570.64x = 42,186 × 17,143.36
  4. Step 4: Simplify right side
    30,570.64x = 723,209,784.96
  5. Step 5: Solve for x
    x = 723,209,784.96/30,570.64
  6. Step 6: Final answer
    x = 23,657.01

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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.