Home / 19,980.83-27,574.45-11,485.71

Finding the Fourth Proportional to 19,980.83, 27,574.45 and 11,485.71

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Solution

The fourth proportional to 19,980.83, 27,574.45 and 11,485.71 is: 15,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.83 : 27,574.45 = 11,485.71 : x
  2. Step 2: Convert to fraction form
    19,980.83/27,574.45 = 11,485.71/x
  3. Step 3: Cross multiply
    19,980.83x = 27,574.45 × 11,485.71
  4. Step 4: Simplify right side
    19,980.83x = 316,712,136.11
  5. Step 5: Solve for x
    x = 316,712,136.11/19,980.83
  6. Step 6: Final answer
    x = 15,850.80

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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.