Home / 19,131.79-28,709.02-10,366.51

Finding the Fourth Proportional to 19,131.79, 28,709.02 and 10,366.51

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Solution

The fourth proportional to 19,131.79, 28,709.02 and 10,366.51 is: 15,555.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.79 : 28,709.02 = 10,366.51 : x
  2. Step 2: Convert to fraction form
    19,131.79/28,709.02 = 10,366.51/x
  3. Step 3: Cross multiply
    19,131.79x = 28,709.02 × 10,366.51
  4. Step 4: Simplify right side
    19,131.79x = 297,612,199.38
  5. Step 5: Solve for x
    x = 297,612,199.38/19,131.79
  6. Step 6: Final answer
    x = 15,555.90

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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.