Home / 28,035.54-38,689.01-15,288.74

Finding the Fourth Proportional to 28,035.54, 38,689.01 and 15,288.74

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Solution

The fourth proportional to 28,035.54, 38,689.01 and 15,288.74 is: 21,098.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.54 : 38,689.01 = 15,288.74 : x
  2. Step 2: Convert to fraction form
    28,035.54/38,689.01 = 15,288.74/x
  3. Step 3: Cross multiply
    28,035.54x = 38,689.01 × 15,288.74
  4. Step 4: Simplify right side
    28,035.54x = 591,506,393.57
  5. Step 5: Solve for x
    x = 591,506,393.57/28,035.54
  6. Step 6: Final answer
    x = 21,098.45

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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.