Home / 21,804.90-30,090.51-12,373.80

Finding the Fourth Proportional to 21,804.90, 30,090.51 and 12,373.80

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Solution

The fourth proportional to 21,804.90, 30,090.51 and 12,373.80 is: 17,075.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.90 : 30,090.51 = 12,373.80 : x
  2. Step 2: Convert to fraction form
    21,804.90/30,090.51 = 12,373.80/x
  3. Step 3: Cross multiply
    21,804.90x = 30,090.51 × 12,373.80
  4. Step 4: Simplify right side
    21,804.90x = 372,333,952.64
  5. Step 5: Solve for x
    x = 372,333,952.64/21,804.90
  6. Step 6: Final answer
    x = 17,075.70

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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.