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Finding the Fourth Proportional to 18,485.64, 25,510.14 and 10,102.20

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Solution

The fourth proportional to 18,485.64, 25,510.14 and 10,102.20 is: 13,941.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.64 : 25,510.14 = 10,102.20 : x
  2. Step 2: Convert to fraction form
    18,485.64/25,510.14 = 10,102.20/x
  3. Step 3: Cross multiply
    18,485.64x = 25,510.14 × 10,102.20
  4. Step 4: Simplify right side
    18,485.64x = 257,708,536.31
  5. Step 5: Solve for x
    x = 257,708,536.31/18,485.64
  6. Step 6: Final answer
    x = 13,941.01

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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.