Home / 15,504.06-21,395.51-8,430.48

Finding the Fourth Proportional to 15,504.06, 21,395.51 and 8,430.48

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Solution

The fourth proportional to 15,504.06, 21,395.51 and 8,430.48 is: 11,634.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.06 : 21,395.51 = 8,430.48 : x
  2. Step 2: Convert to fraction form
    15,504.06/21,395.51 = 8,430.48/x
  3. Step 3: Cross multiply
    15,504.06x = 21,395.51 × 8,430.48
  4. Step 4: Simplify right side
    15,504.06x = 180,374,408.61
  5. Step 5: Solve for x
    x = 180,374,408.61/15,504.06
  6. Step 6: Final answer
    x = 11,634.01

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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.