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Finding the Fourth Proportional to 14,703.63, 20,290.80 and 7,988.93

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Solution

The fourth proportional to 14,703.63, 20,290.80 and 7,988.93 is: 11,024.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.63 : 20,290.80 = 7,988.93 : x
  2. Step 2: Convert to fraction form
    14,703.63/20,290.80 = 7,988.93/x
  3. Step 3: Cross multiply
    14,703.63x = 20,290.80 × 7,988.93
  4. Step 4: Simplify right side
    14,703.63x = 162,101,785.44
  5. Step 5: Solve for x
    x = 162,101,785.44/14,703.63
  6. Step 6: Final answer
    x = 11,024.61

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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.