Home / 21,184.88-31,783.70-19,095.08

Finding the Fourth Proportional to 21,184.88, 31,783.70 and 19,095.08

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Solution

The fourth proportional to 21,184.88, 31,783.70 and 19,095.08 is: 28,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.88 : 31,783.70 = 19,095.08 : x
  2. Step 2: Convert to fraction form
    21,184.88/31,783.70 = 19,095.08/x
  3. Step 3: Cross multiply
    21,184.88x = 31,783.70 × 19,095.08
  4. Step 4: Simplify right side
    21,184.88x = 606,912,421.39
  5. Step 5: Solve for x
    x = 606,912,421.39/21,184.88
  6. Step 6: Final answer
    x = 28,648.37

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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.