Home / 28,663.71-39,555.36-15,916.23

Finding the Fourth Proportional to 28,663.71, 39,555.36 and 15,916.23

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Solution

The fourth proportional to 28,663.71, 39,555.36 and 15,916.23 is: 21,964.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.71 : 39,555.36 = 15,916.23 : x
  2. Step 2: Convert to fraction form
    28,663.71/39,555.36 = 15,916.23/x
  3. Step 3: Cross multiply
    28,663.71x = 39,555.36 × 15,916.23
  4. Step 4: Simplify right side
    28,663.71x = 629,572,207.49
  5. Step 5: Solve for x
    x = 629,572,207.49/28,663.71
  6. Step 6: Final answer
    x = 21,964.09

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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.