Home / 28,611.68-39,483.71-15,864.89

Finding the Fourth Proportional to 28,611.68, 39,483.71 and 15,864.89

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Solution

The fourth proportional to 28,611.68, 39,483.71 and 15,864.89 is: 21,893.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.68 : 39,483.71 = 15,864.89 : x
  2. Step 2: Convert to fraction form
    28,611.68/39,483.71 = 15,864.89/x
  3. Step 3: Cross multiply
    28,611.68x = 39,483.71 × 15,864.89
  4. Step 4: Simplify right side
    28,611.68x = 626,404,715.94
  5. Step 5: Solve for x
    x = 626,404,715.94/28,611.68
  6. Step 6: Final answer
    x = 21,893.32

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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.