Home / 21,570.98-32,356.48-12,330.50

Finding the Fourth Proportional to 21,570.98, 32,356.48 and 12,330.50

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Solution

The fourth proportional to 21,570.98, 32,356.48 and 12,330.50 is: 18,495.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.98 : 32,356.48 = 12,330.50 : x
  2. Step 2: Convert to fraction form
    21,570.98/32,356.48 = 12,330.50/x
  3. Step 3: Cross multiply
    21,570.98x = 32,356.48 × 12,330.50
  4. Step 4: Simplify right side
    21,570.98x = 398,971,576.64
  5. Step 5: Solve for x
    x = 398,971,576.64/21,570.98
  6. Step 6: Final answer
    x = 18,495.76

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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.