Home / 13,281.48-18,327.72-7,615.95

Finding the Fourth Proportional to 13,281.48, 18,327.72 and 7,615.95

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Solution

The fourth proportional to 13,281.48, 18,327.72 and 7,615.95 is: 10,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.48 : 18,327.72 = 7,615.95 : x
  2. Step 2: Convert to fraction form
    13,281.48/18,327.72 = 7,615.95/x
  3. Step 3: Cross multiply
    13,281.48x = 18,327.72 × 7,615.95
  4. Step 4: Simplify right side
    13,281.48x = 139,582,999.13
  5. Step 5: Solve for x
    x = 139,582,999.13/13,281.48
  6. Step 6: Final answer
    x = 10,509.60

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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.