Home / 30,656.22-45,987.57-13,121.34

Finding the Fourth Proportional to 30,656.22, 45,987.57 and 13,121.34

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Solution

The fourth proportional to 30,656.22, 45,987.57 and 13,121.34 is: 19,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,656.22 : 45,987.57 = 13,121.34 : x
  2. Step 2: Convert to fraction form
    30,656.22/45,987.57 = 13,121.34/x
  3. Step 3: Cross multiply
    30,656.22x = 45,987.57 × 13,121.34
  4. Step 4: Simplify right side
    30,656.22x = 603,418,541.74
  5. Step 5: Solve for x
    x = 603,418,541.74/30,656.22
  6. Step 6: Final answer
    x = 19,683.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.