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Finding the Fourth Proportional to 19,657.64, 29,467.02 and 9,782.12

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Solution

The fourth proportional to 19,657.64, 29,467.02 and 9,782.12 is: 14,663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.64 : 29,467.02 = 9,782.12 : x
  2. Step 2: Convert to fraction form
    19,657.64/29,467.02 = 9,782.12/x
  3. Step 3: Cross multiply
    19,657.64x = 29,467.02 × 9,782.12
  4. Step 4: Simplify right side
    19,657.64x = 288,249,925.68
  5. Step 5: Solve for x
    x = 288,249,925.68/19,657.64
  6. Step 6: Final answer
    x = 14,663.51

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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.