Home / 28,356.48-39,142.62-21,303.27

Finding the Fourth Proportional to 28,356.48, 39,142.62 and 21,303.27

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Solution

The fourth proportional to 28,356.48, 39,142.62 and 21,303.27 is: 29,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.48 : 39,142.62 = 21,303.27 : x
  2. Step 2: Convert to fraction form
    28,356.48/39,142.62 = 21,303.27/x
  3. Step 3: Cross multiply
    28,356.48x = 39,142.62 × 21,303.27
  4. Step 4: Simplify right side
    28,356.48x = 833,865,802.37
  5. Step 5: Solve for x
    x = 833,865,802.37/28,356.48
  6. Step 6: Final answer
    x = 29,406.53

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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.