Home / 21,927.31-30,273.52-15,210.59

Finding the Fourth Proportional to 21,927.31, 30,273.52 and 15,210.59

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Solution

The fourth proportional to 21,927.31, 30,273.52 and 15,210.59 is: 21,000.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,927.31 : 30,273.52 = 15,210.59 : x
  2. Step 2: Convert to fraction form
    21,927.31/30,273.52 = 15,210.59/x
  3. Step 3: Cross multiply
    21,927.31x = 30,273.52 × 15,210.59
  4. Step 4: Simplify right side
    21,927.31x = 460,477,968.22
  5. Step 5: Solve for x
    x = 460,477,968.22/21,927.31
  6. Step 6: Final answer
    x = 21,000.21

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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.