Home / 28,390.16-39,177-15,816.08

Finding the Fourth Proportional to 28,390.16, 39,177 and 15,816.08

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Solution

The fourth proportional to 28,390.16, 39,177 and 15,816.08 is: 21,825.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.16 : 39,177 = 15,816.08 : x
  2. Step 2: Convert to fraction form
    28,390.16/39,177 = 15,816.08/x
  3. Step 3: Cross multiply
    28,390.16x = 39,177 × 15,816.08
  4. Step 4: Simplify right side
    28,390.16x = 619,626,566.16
  5. Step 5: Solve for x
    x = 619,626,566.16/28,390.16
  6. Step 6: Final answer
    x = 21,825.40

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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.