Home / 28,809.24-39,756.76-15,561.24

Finding the Fourth Proportional to 28,809.24, 39,756.76 and 15,561.24

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Solution

The fourth proportional to 28,809.24, 39,756.76 and 15,561.24 is: 21,474.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809.24 : 39,756.76 = 15,561.24 : x
  2. Step 2: Convert to fraction form
    28,809.24/39,756.76 = 15,561.24/x
  3. Step 3: Cross multiply
    28,809.24x = 39,756.76 × 15,561.24
  4. Step 4: Simplify right side
    28,809.24x = 618,664,483.98
  5. Step 5: Solve for x
    x = 618,664,483.98/28,809.24
  6. Step 6: Final answer
    x = 21,474.52

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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.