Home / 21,561.90-29,750.93-12,607.66

Finding the Fourth Proportional to 21,561.90, 29,750.93 and 12,607.66

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Solution

The fourth proportional to 21,561.90, 29,750.93 and 12,607.66 is: 17,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.90 : 29,750.93 = 12,607.66 : x
  2. Step 2: Convert to fraction form
    21,561.90/29,750.93 = 12,607.66/x
  3. Step 3: Cross multiply
    21,561.90x = 29,750.93 × 12,607.66
  4. Step 4: Simplify right side
    21,561.90x = 375,089,631.55
  5. Step 5: Solve for x
    x = 375,089,631.55/21,561.90
  6. Step 6: Final answer
    x = 17,395.95

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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.