Home / 21,136.95-31,762.80-11,283.30

Finding the Fourth Proportional to 21,136.95, 31,762.80 and 11,283.30

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Solution

The fourth proportional to 21,136.95, 31,762.80 and 11,283.30 is: 16,955.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.95 : 31,762.80 = 11,283.30 : x
  2. Step 2: Convert to fraction form
    21,136.95/31,762.80 = 11,283.30/x
  3. Step 3: Cross multiply
    21,136.95x = 31,762.80 × 11,283.30
  4. Step 4: Simplify right side
    21,136.95x = 358,389,201.24
  5. Step 5: Solve for x
    x = 358,389,201.24/21,136.95
  6. Step 6: Final answer
    x = 16,955.58

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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.