Home / 28,036.17-38,689.60-15,289.31

Finding the Fourth Proportional to 28,036.17, 38,689.60 and 15,289.31

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Solution

The fourth proportional to 28,036.17, 38,689.60 and 15,289.31 is: 21,099.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.17 : 38,689.60 = 15,289.31 : x
  2. Step 2: Convert to fraction form
    28,036.17/38,689.60 = 15,289.31/x
  3. Step 3: Cross multiply
    28,036.17x = 38,689.60 × 15,289.31
  4. Step 4: Simplify right side
    28,036.17x = 591,537,288.18
  5. Step 5: Solve for x
    x = 591,537,288.18/28,036.17
  6. Step 6: Final answer
    x = 21,099.08

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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.