Home / 40,889.86-61,334.78-12,812.13

Finding the Fourth Proportional to 40,889.86, 61,334.78 and 12,812.13

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Solution

The fourth proportional to 40,889.86, 61,334.78 and 12,812.13 is: 19,218.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,889.86 : 61,334.78 = 12,812.13 : x
  2. Step 2: Convert to fraction form
    40,889.86/61,334.78 = 12,812.13/x
  3. Step 3: Cross multiply
    40,889.86x = 61,334.78 × 12,812.13
  4. Step 4: Simplify right side
    40,889.86x = 785,828,888.10
  5. Step 5: Solve for x
    x = 785,828,888.10/40,889.86
  6. Step 6: Final answer
    x = 19,218.18

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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.