Home / 28,307.56-42,476.06-15,819.88

Finding the Fourth Proportional to 28,307.56, 42,476.06 and 15,819.88

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Solution

The fourth proportional to 28,307.56, 42,476.06 and 15,819.88 is: 23,738.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.56 : 42,476.06 = 15,819.88 : x
  2. Step 2: Convert to fraction form
    28,307.56/42,476.06 = 15,819.88/x
  3. Step 3: Cross multiply
    28,307.56x = 42,476.06 × 15,819.88
  4. Step 4: Simplify right side
    28,307.56x = 671,966,172.07
  5. Step 5: Solve for x
    x = 671,966,172.07/28,307.56
  6. Step 6: Final answer
    x = 23,738.05

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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.