Home / 53,214.20-79,821.30-18,145.40

Finding the Fourth Proportional to 53,214.20, 79,821.30 and 18,145.40

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Solution

The fourth proportional to 53,214.20, 79,821.30 and 18,145.40 is: 27,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,214.20 : 79,821.30 = 18,145.40 : x
  2. Step 2: Convert to fraction form
    53,214.20/79,821.30 = 18,145.40/x
  3. Step 3: Cross multiply
    53,214.20x = 79,821.30 × 18,145.40
  4. Step 4: Simplify right side
    53,214.20x = 1,448,389,417.02
  5. Step 5: Solve for x
    x = 1,448,389,417.02/53,214.20
  6. Step 6: Final answer
    x = 27,218.10

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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.