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Finding the Fourth Proportional to 35,643.70, 53,465.55 and 21,646.90

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Solution

The fourth proportional to 35,643.70, 53,465.55 and 21,646.90 is: 32,470.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,643.70 : 53,465.55 = 21,646.90 : x
  2. Step 2: Convert to fraction form
    35,643.70/53,465.55 = 21,646.90/x
  3. Step 3: Cross multiply
    35,643.70x = 53,465.55 × 21,646.90
  4. Step 4: Simplify right side
    35,643.70x = 1,157,363,414.30
  5. Step 5: Solve for x
    x = 1,157,363,414.30/35,643.70
  6. Step 6: Final answer
    x = 32,470.35

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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.