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Finding the Fourth Proportional to 10,554.78, 15,837.59 and 4,715.22

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Solution

The fourth proportional to 10,554.78, 15,837.59 and 4,715.22 is: 7,075.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,554.78 : 15,837.59 = 4,715.22 : x
  2. Step 2: Convert to fraction form
    10,554.78/15,837.59 = 4,715.22/x
  3. Step 3: Cross multiply
    10,554.78x = 15,837.59 × 4,715.22
  4. Step 4: Simplify right side
    10,554.78x = 74,677,721.12
  5. Step 5: Solve for x
    x = 74,677,721.12/10,554.78
  6. Step 6: Final answer
    x = 7,075.25

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1.5x scale

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.