Home / 28,935.65-39,915.12-16,834.78

Finding the Fourth Proportional to 28,935.65, 39,915.12 and 16,834.78

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Solution

The fourth proportional to 28,935.65, 39,915.12 and 16,834.78 is: 23,222.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,935.65 : 39,915.12 = 16,834.78 : x
  2. Step 2: Convert to fraction form
    28,935.65/39,915.12 = 16,834.78/x
  3. Step 3: Cross multiply
    28,935.65x = 39,915.12 × 16,834.78
  4. Step 4: Simplify right side
    28,935.65x = 671,962,263.87
  5. Step 5: Solve for x
    x = 671,962,263.87/28,935.65
  6. Step 6: Final answer
    x = 23,222.64

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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.