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Finding the Fourth Proportional to 17,921.40, 26,903.70 and 10,030.20

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Solution

The fourth proportional to 17,921.40, 26,903.70 and 10,030.20 is: 15,057.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.40 : 26,903.70 = 10,030.20 : x
  2. Step 2: Convert to fraction form
    17,921.40/26,903.70 = 10,030.20/x
  3. Step 3: Cross multiply
    17,921.40x = 26,903.70 × 10,030.20
  4. Step 4: Simplify right side
    17,921.40x = 269,849,491.74
  5. Step 5: Solve for x
    x = 269,849,491.74/17,921.40
  6. Step 6: Final answer
    x = 15,057.39

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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.