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Finding the Fourth Proportional to 21,751.80, 32,554.80 and 19,127.40

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Solution

The fourth proportional to 21,751.80, 32,554.80 and 19,127.40 is: 28,627.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.80 : 32,554.80 = 19,127.40 : x
  2. Step 2: Convert to fraction form
    21,751.80/32,554.80 = 19,127.40/x
  3. Step 3: Cross multiply
    21,751.80x = 32,554.80 × 19,127.40
  4. Step 4: Simplify right side
    21,751.80x = 622,688,681.52
  5. Step 5: Solve for x
    x = 622,688,681.52/21,751.80
  6. Step 6: Final answer
    x = 28,627.00

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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.