Home / 15,485.56-21,378.93-10,195.75

Finding the Fourth Proportional to 15,485.56, 21,378.93 and 10,195.75

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Solution

The fourth proportional to 15,485.56, 21,378.93 and 10,195.75 is: 14,075.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.56 : 21,378.93 = 10,195.75 : x
  2. Step 2: Convert to fraction form
    15,485.56/21,378.93 = 10,195.75/x
  3. Step 3: Cross multiply
    15,485.56x = 21,378.93 × 10,195.75
  4. Step 4: Simplify right side
    15,485.56x = 217,974,225.55
  5. Step 5: Solve for x
    x = 217,974,225.55/15,485.56
  6. Step 6: Final answer
    x = 14,075.97

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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.