Home / 12,543.31-18,704.41-12,430.89

Finding the Fourth Proportional to 12,543.31, 18,704.41 and 12,430.89

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Solution

The fourth proportional to 12,543.31, 18,704.41 and 12,430.89 is: 18,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.31 : 18,704.41 = 12,430.89 : x
  2. Step 2: Convert to fraction form
    12,543.31/18,704.41 = 12,430.89/x
  3. Step 3: Cross multiply
    12,543.31x = 18,704.41 × 12,430.89
  4. Step 4: Simplify right side
    12,543.31x = 232,512,463.22
  5. Step 5: Solve for x
    x = 232,512,463.22/12,543.31
  6. Step 6: Final answer
    x = 18,536.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.