Home / 15,271.56-21,075.12-8,465.45

Finding the Fourth Proportional to 15,271.56, 21,075.12 and 8,465.45

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Solution

The fourth proportional to 15,271.56, 21,075.12 and 8,465.45 is: 11,682.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.56 : 21,075.12 = 8,465.45 : x
  2. Step 2: Convert to fraction form
    15,271.56/21,075.12 = 8,465.45/x
  3. Step 3: Cross multiply
    15,271.56x = 21,075.12 × 8,465.45
  4. Step 4: Simplify right side
    15,271.56x = 178,410,269.23
  5. Step 5: Solve for x
    x = 178,410,269.23/15,271.56
  6. Step 6: Final answer
    x = 11,682.52

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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.