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Finding the Fourth Proportional to 19,251.63, 28,904.29 and 9,899.57

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Solution

The fourth proportional to 19,251.63, 28,904.29 and 9,899.57 is: 14,863.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.63 : 28,904.29 = 9,899.57 : x
  2. Step 2: Convert to fraction form
    19,251.63/28,904.29 = 9,899.57/x
  3. Step 3: Cross multiply
    19,251.63x = 28,904.29 × 9,899.57
  4. Step 4: Simplify right side
    19,251.63x = 286,140,089.67
  5. Step 5: Solve for x
    x = 286,140,089.67/19,251.63
  6. Step 6: Final answer
    x = 14,863.16

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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.