Home / 19,951.21-27,533.12-10,998.79

Finding the Fourth Proportional to 19,951.21, 27,533.12 and 10,998.79

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Solution

The fourth proportional to 19,951.21, 27,533.12 and 10,998.79 is: 15,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.21 : 27,533.12 = 10,998.79 : x
  2. Step 2: Convert to fraction form
    19,951.21/27,533.12 = 10,998.79/x
  3. Step 3: Cross multiply
    19,951.21x = 27,533.12 × 10,998.79
  4. Step 4: Simplify right side
    19,951.21x = 302,830,881.10
  5. Step 5: Solve for x
    x = 302,830,881.10/19,951.21
  6. Step 6: Final answer
    x = 15,178.57

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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.