Home / 15,271.98-21,072.90-9,305.52

Finding the Fourth Proportional to 15,271.98, 21,072.90 and 9,305.52

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Solution

The fourth proportional to 15,271.98, 21,072.90 and 9,305.52 is: 12,840.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.98 : 21,072.90 = 9,305.52 : x
  2. Step 2: Convert to fraction form
    15,271.98/21,072.90 = 9,305.52/x
  3. Step 3: Cross multiply
    15,271.98x = 21,072.90 × 9,305.52
  4. Step 4: Simplify right side
    15,271.98x = 196,094,292.41
  5. Step 5: Solve for x
    x = 196,094,292.41/15,271.98
  6. Step 6: Final answer
    x = 12,840.14

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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.