Home / 40,898.21-61,347.21-12,820.40

Finding the Fourth Proportional to 40,898.21, 61,347.21 and 12,820.40

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Solution

The fourth proportional to 40,898.21, 61,347.21 and 12,820.40 is: 19,230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,898.21 : 61,347.21 = 12,820.40 : x
  2. Step 2: Convert to fraction form
    40,898.21/61,347.21 = 12,820.40/x
  3. Step 3: Cross multiply
    40,898.21x = 61,347.21 × 12,820.40
  4. Step 4: Simplify right side
    40,898.21x = 786,495,771.08
  5. Step 5: Solve for x
    x = 786,495,771.08/40,898.21
  6. Step 6: Final answer
    x = 19,230.57

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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.