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Finding the Fourth Proportional to 19,607.40, 27,047.70 and 12,424.32

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Solution

The fourth proportional to 19,607.40, 27,047.70 and 12,424.32 is: 17,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,607.40 : 27,047.70 = 12,424.32 : x
  2. Step 2: Convert to fraction form
    19,607.40/27,047.70 = 12,424.32/x
  3. Step 3: Cross multiply
    19,607.40x = 27,047.70 × 12,424.32
  4. Step 4: Simplify right side
    19,607.40x = 336,049,280.06
  5. Step 5: Solve for x
    x = 336,049,280.06/19,607.40
  6. Step 6: Final answer
    x = 17,138.90

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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.