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Finding the Fourth Proportional to 18,995.01, 28,477.25 and 13,054.29

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Solution

The fourth proportional to 18,995.01, 28,477.25 and 13,054.29 is: 19,570.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.01 : 28,477.25 = 13,054.29 : x
  2. Step 2: Convert to fraction form
    18,995.01/28,477.25 = 13,054.29/x
  3. Step 3: Cross multiply
    18,995.01x = 28,477.25 × 13,054.29
  4. Step 4: Simplify right side
    18,995.01x = 371,750,214.63
  5. Step 5: Solve for x
    x = 371,750,214.63/18,995.01
  6. Step 6: Final answer
    x = 19,570.94

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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.