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Finding the Fourth Proportional to 35,254.80, 48,656.64 and 21,830.40

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Solution

The fourth proportional to 35,254.80, 48,656.64 and 21,830.40 is: 30,129.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,254.80 : 48,656.64 = 21,830.40 : x
  2. Step 2: Convert to fraction form
    35,254.80/48,656.64 = 21,830.40/x
  3. Step 3: Cross multiply
    35,254.80x = 48,656.64 × 21,830.40
  4. Step 4: Simplify right side
    35,254.80x = 1,062,193,913.86
  5. Step 5: Solve for x
    x = 1,062,193,913.86/35,254.80
  6. Step 6: Final answer
    x = 30,129.06

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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.