Home / 28,318.15-39,075.63-15,569.23

Finding the Fourth Proportional to 28,318.15, 39,075.63 and 15,569.23

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Solution

The fourth proportional to 28,318.15, 39,075.63 and 15,569.23 is: 21,483.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.15 : 39,075.63 = 15,569.23 : x
  2. Step 2: Convert to fraction form
    28,318.15/39,075.63 = 15,569.23/x
  3. Step 3: Cross multiply
    28,318.15x = 39,075.63 × 15,569.23
  4. Step 4: Simplify right side
    28,318.15x = 608,377,470.86
  5. Step 5: Solve for x
    x = 608,377,470.86/28,318.15
  6. Step 6: Final answer
    x = 21,483.66

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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.