Home / 19,880.02-27,423.41-12,598.78

Finding the Fourth Proportional to 19,880.02, 27,423.41 and 12,598.78

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Solution

The fourth proportional to 19,880.02, 27,423.41 and 12,598.78 is: 17,379.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.02 : 27,423.41 = 12,598.78 : x
  2. Step 2: Convert to fraction form
    19,880.02/27,423.41 = 12,598.78/x
  3. Step 3: Cross multiply
    19,880.02x = 27,423.41 × 12,598.78
  4. Step 4: Simplify right side
    19,880.02x = 345,501,509.44
  5. Step 5: Solve for x
    x = 345,501,509.44/19,880.02
  6. Step 6: Final answer
    x = 17,379.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.