Home / 28,646.86-39,551.94-21,920.47

Finding the Fourth Proportional to 28,646.86, 39,551.94 and 21,920.47

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Solution

The fourth proportional to 28,646.86, 39,551.94 and 21,920.47 is: 30,265.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.86 : 39,551.94 = 21,920.47 : x
  2. Step 2: Convert to fraction form
    28,646.86/39,551.94 = 21,920.47/x
  3. Step 3: Cross multiply
    28,646.86x = 39,551.94 × 21,920.47
  4. Step 4: Simplify right side
    28,646.86x = 866,997,114.21
  5. Step 5: Solve for x
    x = 866,997,114.21/28,646.86
  6. Step 6: Final answer
    x = 30,265.00

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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.