Home / 28,559.34-39,409.98-16,620.78

Finding the Fourth Proportional to 28,559.34, 39,409.98 and 16,620.78

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Solution

The fourth proportional to 28,559.34, 39,409.98 and 16,620.78 is: 22,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.34 : 39,409.98 = 16,620.78 : x
  2. Step 2: Convert to fraction form
    28,559.34/39,409.98 = 16,620.78/x
  3. Step 3: Cross multiply
    28,559.34x = 39,409.98 × 16,620.78
  4. Step 4: Simplify right side
    28,559.34x = 655,024,607.38
  5. Step 5: Solve for x
    x = 655,024,607.38/28,559.34
  6. Step 6: Final answer
    x = 22,935.57

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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.