Home / 28,667.16-39,559.34-15,921.17

Finding the Fourth Proportional to 28,667.16, 39,559.34 and 15,921.17

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Solution

The fourth proportional to 28,667.16, 39,559.34 and 15,921.17 is: 21,970.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,667.16 : 39,559.34 = 15,921.17 : x
  2. Step 2: Convert to fraction form
    28,667.16/39,559.34 = 15,921.17/x
  3. Step 3: Cross multiply
    28,667.16x = 39,559.34 × 15,921.17
  4. Step 4: Simplify right side
    28,667.16x = 629,830,699.83
  5. Step 5: Solve for x
    x = 629,830,699.83/28,667.16
  6. Step 6: Final answer
    x = 21,970.46

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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.