Home / 13,261.61-18,281.75-9,270.35

Finding the Fourth Proportional to 13,261.61, 18,281.75 and 9,270.35

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Solution

The fourth proportional to 13,261.61, 18,281.75 and 9,270.35 is: 12,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.61 : 18,281.75 = 9,270.35 : x
  2. Step 2: Convert to fraction form
    13,261.61/18,281.75 = 9,270.35/x
  3. Step 3: Cross multiply
    13,261.61x = 18,281.75 × 9,270.35
  4. Step 4: Simplify right side
    13,261.61x = 169,478,152.88
  5. Step 5: Solve for x
    x = 169,478,152.88/13,261.61
  6. Step 6: Final answer
    x = 12,779.61

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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.