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Finding the Fourth Proportional to 18,637.76, 25,713.36 and 10,570.40

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Solution

The fourth proportional to 18,637.76, 25,713.36 and 10,570.40 is: 14,583.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.76 : 25,713.36 = 10,570.40 : x
  2. Step 2: Convert to fraction form
    18,637.76/25,713.36 = 10,570.40/x
  3. Step 3: Cross multiply
    18,637.76x = 25,713.36 × 10,570.40
  4. Step 4: Simplify right side
    18,637.76x = 271,800,500.54
  5. Step 5: Solve for x
    x = 271,800,500.54/18,637.76
  6. Step 6: Final answer
    x = 14,583.32

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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.