Home / 20,651.07-28,498.59-12,153.51

Finding the Fourth Proportional to 20,651.07, 28,498.59 and 12,153.51

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Solution

The fourth proportional to 20,651.07, 28,498.59 and 12,153.51 is: 16,771.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.07 : 28,498.59 = 12,153.51 : x
  2. Step 2: Convert to fraction form
    20,651.07/28,498.59 = 12,153.51/x
  3. Step 3: Cross multiply
    20,651.07x = 28,498.59 × 12,153.51
  4. Step 4: Simplify right side
    20,651.07x = 346,357,898.55
  5. Step 5: Solve for x
    x = 346,357,898.55/20,651.07
  6. Step 6: Final answer
    x = 16,771.91

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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.