Home / 28,133.58-38,823.90-15,386.48

Finding the Fourth Proportional to 28,133.58, 38,823.90 and 15,386.48

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Solution

The fourth proportional to 28,133.58, 38,823.90 and 15,386.48 is: 21,233.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.58 : 38,823.90 = 15,386.48 : x
  2. Step 2: Convert to fraction form
    28,133.58/38,823.90 = 15,386.48/x
  3. Step 3: Cross multiply
    28,133.58x = 38,823.90 × 15,386.48
  4. Step 4: Simplify right side
    28,133.58x = 597,362,966.75
  5. Step 5: Solve for x
    x = 597,362,966.75/28,133.58
  6. Step 6: Final answer
    x = 21,233.09

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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.