Home / 15,873.40-21,907.88-12,090.52

Finding the Fourth Proportional to 15,873.40, 21,907.88 and 12,090.52

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Solution

The fourth proportional to 15,873.40, 21,907.88 and 12,090.52 is: 16,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.40 : 21,907.88 = 12,090.52 : x
  2. Step 2: Convert to fraction form
    15,873.40/21,907.88 = 12,090.52/x
  3. Step 3: Cross multiply
    15,873.40x = 21,907.88 × 12,090.52
  4. Step 4: Simplify right side
    15,873.40x = 264,877,661.30
  5. Step 5: Solve for x
    x = 264,877,661.30/15,873.40
  6. Step 6: Final answer
    x = 16,686.89

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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.