Home / 28,089.18-38,763.05-15,513.93

Finding the Fourth Proportional to 28,089.18, 38,763.05 and 15,513.93

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Solution

The fourth proportional to 28,089.18, 38,763.05 and 15,513.93 is: 21,409.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.18 : 38,763.05 = 15,513.93 : x
  2. Step 2: Convert to fraction form
    28,089.18/38,763.05 = 15,513.93/x
  3. Step 3: Cross multiply
    28,089.18x = 38,763.05 × 15,513.93
  4. Step 4: Simplify right side
    28,089.18x = 601,367,166.72
  5. Step 5: Solve for x
    x = 601,367,166.72/28,089.18
  6. Step 6: Final answer
    x = 21,409.21

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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.