Home / 28,898.22-43,347.35-18,911.40

Finding the Fourth Proportional to 28,898.22, 43,347.35 and 18,911.40

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Solution

The fourth proportional to 28,898.22, 43,347.35 and 18,911.40 is: 28,367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.22 : 43,347.35 = 18,911.40 : x
  2. Step 2: Convert to fraction form
    28,898.22/43,347.35 = 18,911.40/x
  3. Step 3: Cross multiply
    28,898.22x = 43,347.35 × 18,911.40
  4. Step 4: Simplify right side
    28,898.22x = 819,758,980.23
  5. Step 5: Solve for x
    x = 819,758,980.23/28,898.22
  6. Step 6: Final answer
    x = 28,367.11

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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.