Home / 15,475.04-21,339.40-9,186.20

Finding the Fourth Proportional to 15,475.04, 21,339.40 and 9,186.20

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Solution

The fourth proportional to 15,475.04, 21,339.40 and 9,186.20 is: 12,667.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.04 : 21,339.40 = 9,186.20 : x
  2. Step 2: Convert to fraction form
    15,475.04/21,339.40 = 9,186.20/x
  3. Step 3: Cross multiply
    15,475.04x = 21,339.40 × 9,186.20
  4. Step 4: Simplify right side
    15,475.04x = 196,027,996.28
  5. Step 5: Solve for x
    x = 196,027,996.28/15,475.04
  6. Step 6: Final answer
    x = 12,667.37

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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.