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Finding the Fourth Proportional to 14,972.40, 22,415.40 and 13,417.20

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Solution

The fourth proportional to 14,972.40, 22,415.40 and 13,417.20 is: 20,087.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,972.40 : 22,415.40 = 13,417.20 : x
  2. Step 2: Convert to fraction form
    14,972.40/22,415.40 = 13,417.20/x
  3. Step 3: Cross multiply
    14,972.40x = 22,415.40 × 13,417.20
  4. Step 4: Simplify right side
    14,972.40x = 300,751,904.88
  5. Step 5: Solve for x
    x = 300,751,904.88/14,972.40
  6. Step 6: Final answer
    x = 20,087.09

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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.