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Finding the Fourth Proportional to 15,679, 23,628.56 and 14,120.76

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Solution

The fourth proportional to 15,679, 23,628.56 and 14,120.76 is: 21,280.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679 : 23,628.56 = 14,120.76 : x
  2. Step 2: Convert to fraction form
    15,679/23,628.56 = 14,120.76/x
  3. Step 3: Cross multiply
    15,679x = 23,628.56 × 14,120.76
  4. Step 4: Simplify right side
    15,679x = 333,653,224.91
  5. Step 5: Solve for x
    x = 333,653,224.91/15,679
  6. Step 6: Final answer
    x = 21,280.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.