Home / 15,395.98-21,246.03-8,681.55

Finding the Fourth Proportional to 15,395.98, 21,246.03 and 8,681.55

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Solution

The fourth proportional to 15,395.98, 21,246.03 and 8,681.55 is: 11,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.98 : 21,246.03 = 8,681.55 : x
  2. Step 2: Convert to fraction form
    15,395.98/21,246.03 = 8,681.55/x
  3. Step 3: Cross multiply
    15,395.98x = 21,246.03 × 8,681.55
  4. Step 4: Simplify right side
    15,395.98x = 184,448,471.75
  5. Step 5: Solve for x
    x = 184,448,471.75/15,395.98
  6. Step 6: Final answer
    x = 11,980.30

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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.