Home / 28,114.48-38,810.47-21,400.39

Finding the Fourth Proportional to 28,114.48, 38,810.47 and 21,400.39

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Solution

The fourth proportional to 28,114.48, 38,810.47 and 21,400.39 is: 29,542.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.48 : 38,810.47 = 21,400.39 : x
  2. Step 2: Convert to fraction form
    28,114.48/38,810.47 = 21,400.39/x
  3. Step 3: Cross multiply
    28,114.48x = 38,810.47 × 21,400.39
  4. Step 4: Simplify right side
    28,114.48x = 830,558,950.72
  5. Step 5: Solve for x
    x = 830,558,950.72/28,114.48
  6. Step 6: Final answer
    x = 29,542.04

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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.