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Finding the Fourth Proportional to 36,290.88, 54,390.24 and 19,886.40

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Solution

The fourth proportional to 36,290.88, 54,390.24 and 19,886.40 is: 29,804.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,290.88 : 54,390.24 = 19,886.40 : x
  2. Step 2: Convert to fraction form
    36,290.88/54,390.24 = 19,886.40/x
  3. Step 3: Cross multiply
    36,290.88x = 54,390.24 × 19,886.40
  4. Step 4: Simplify right side
    36,290.88x = 1,081,626,068.74
  5. Step 5: Solve for x
    x = 1,081,626,068.74/36,290.88
  6. Step 6: Final answer
    x = 29,804.35

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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.