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Finding the Fourth Proportional to 40,953.99, 61,430.95 and 12,876.09

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Solution

The fourth proportional to 40,953.99, 61,430.95 and 12,876.09 is: 19,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,953.99 : 61,430.95 = 12,876.09 : x
  2. Step 2: Convert to fraction form
    40,953.99/61,430.95 = 12,876.09/x
  3. Step 3: Cross multiply
    40,953.99x = 61,430.95 × 12,876.09
  4. Step 4: Simplify right side
    40,953.99x = 790,990,440.99
  5. Step 5: Solve for x
    x = 790,990,440.99/40,953.99
  6. Step 6: Final answer
    x = 19,314.12

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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.