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Finding the Fourth Proportional to 18,247.40, 27,428.70 and 17,210.60

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Solution

The fourth proportional to 18,247.40, 27,428.70 and 17,210.60 is: 25,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,247.40 : 27,428.70 = 17,210.60 : x
  2. Step 2: Convert to fraction form
    18,247.40/27,428.70 = 17,210.60/x
  3. Step 3: Cross multiply
    18,247.40x = 27,428.70 × 17,210.60
  4. Step 4: Simplify right side
    18,247.40x = 472,064,384.22
  5. Step 5: Solve for x
    x = 472,064,384.22/18,247.40
  6. Step 6: Final answer
    x = 25,870.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.