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Finding the Fourth Proportional to 19,373.88, 28,994.46 and 13,457.44

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Solution

The fourth proportional to 19,373.88, 28,994.46 and 13,457.44 is: 20,140.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,373.88 : 28,994.46 = 13,457.44 : x
  2. Step 2: Convert to fraction form
    19,373.88/28,994.46 = 13,457.44/x
  3. Step 3: Cross multiply
    19,373.88x = 28,994.46 × 13,457.44
  4. Step 4: Simplify right side
    19,373.88x = 390,191,133.30
  5. Step 5: Solve for x
    x = 390,191,133.30/19,373.88
  6. Step 6: Final answer
    x = 20,140.06

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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.