Home / 11,120.63-15,347.48-6,405.89

Finding the Fourth Proportional to 11,120.63, 15,347.48 and 6,405.89

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Solution

The fourth proportional to 11,120.63, 15,347.48 and 6,405.89 is: 8,840.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.63 : 15,347.48 = 6,405.89 : x
  2. Step 2: Convert to fraction form
    11,120.63/15,347.48 = 6,405.89/x
  3. Step 3: Cross multiply
    11,120.63x = 15,347.48 × 6,405.89
  4. Step 4: Simplify right side
    11,120.63x = 98,314,159.89
  5. Step 5: Solve for x
    x = 98,314,159.89/11,120.63
  6. Step 6: Final answer
    x = 8,840.70

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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.