Home / 10,075.79-15,123.11-5,148.97

Finding the Fourth Proportional to 10,075.79, 15,123.11 and 5,148.97

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Solution

The fourth proportional to 10,075.79, 15,123.11 and 5,148.97 is: 7,728.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,075.79 : 15,123.11 = 5,148.97 : x
  2. Step 2: Convert to fraction form
    10,075.79/15,123.11 = 5,148.97/x
  3. Step 3: Cross multiply
    10,075.79x = 15,123.11 × 5,148.97
  4. Step 4: Simplify right side
    10,075.79x = 77,868,376.14
  5. Step 5: Solve for x
    x = 77,868,376.14/10,075.79
  6. Step 6: Final answer
    x = 7,728.26

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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.