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Finding the Fourth Proportional to 14,319, 19,750.14 and 12,426.84

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Solution

The fourth proportional to 14,319, 19,750.14 and 12,426.84 is: 17,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319 : 19,750.14 = 12,426.84 : x
  2. Step 2: Convert to fraction form
    14,319/19,750.14 = 12,426.84/x
  3. Step 3: Cross multiply
    14,319x = 19,750.14 × 12,426.84
  4. Step 4: Simplify right side
    14,319x = 245,431,829.76
  5. Step 5: Solve for x
    x = 245,431,829.76/14,319
  6. Step 6: Final answer
    x = 17,140.29

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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.