Home / 28,511.04-39,343.65-15,763.48

Finding the Fourth Proportional to 28,511.04, 39,343.65 and 15,763.48

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Solution

The fourth proportional to 28,511.04, 39,343.65 and 15,763.48 is: 21,752.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.04 : 39,343.65 = 15,763.48 : x
  2. Step 2: Convert to fraction form
    28,511.04/39,343.65 = 15,763.48/x
  3. Step 3: Cross multiply
    28,511.04x = 39,343.65 × 15,763.48
  4. Step 4: Simplify right side
    28,511.04x = 620,192,564.37
  5. Step 5: Solve for x
    x = 620,192,564.37/28,511.04
  6. Step 6: Final answer
    x = 21,752.72

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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.