Home / 28,237.63-38,966.64-15,490.54

Finding the Fourth Proportional to 28,237.63, 38,966.64 and 15,490.54

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Solution

The fourth proportional to 28,237.63, 38,966.64 and 15,490.54 is: 21,376.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.63 : 38,966.64 = 15,490.54 : x
  2. Step 2: Convert to fraction form
    28,237.63/38,966.64 = 15,490.54/x
  3. Step 3: Cross multiply
    28,237.63x = 38,966.64 × 15,490.54
  4. Step 4: Simplify right side
    28,237.63x = 603,614,122.31
  5. Step 5: Solve for x
    x = 603,614,122.31/28,237.63
  6. Step 6: Final answer
    x = 21,376.23

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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.