Home / 28,242.93-42,312.76-13,222.50

Finding the Fourth Proportional to 28,242.93, 42,312.76 and 13,222.50

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Solution

The fourth proportional to 28,242.93, 42,312.76 and 13,222.50 is: 19,809.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.93 : 42,312.76 = 13,222.50 : x
  2. Step 2: Convert to fraction form
    28,242.93/42,312.76 = 13,222.50/x
  3. Step 3: Cross multiply
    28,242.93x = 42,312.76 × 13,222.50
  4. Step 4: Simplify right side
    28,242.93x = 559,480,469.10
  5. Step 5: Solve for x
    x = 559,480,469.10/28,242.93
  6. Step 6: Final answer
    x = 19,809.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.