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Finding the Fourth Proportional to 19,762.92, 27,279.18 and 13,054.50

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Solution

The fourth proportional to 19,762.92, 27,279.18 and 13,054.50 is: 18,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,762.92 : 27,279.18 = 13,054.50 : x
  2. Step 2: Convert to fraction form
    19,762.92/27,279.18 = 13,054.50/x
  3. Step 3: Cross multiply
    19,762.92x = 27,279.18 × 13,054.50
  4. Step 4: Simplify right side
    19,762.92x = 356,116,055.31
  5. Step 5: Solve for x
    x = 356,116,055.31/19,762.92
  6. Step 6: Final answer
    x = 18,019.40

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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.