Home / 21,904.04-30,225.90-12,470.72

Finding the Fourth Proportional to 21,904.04, 30,225.90 and 12,470.72

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Solution

The fourth proportional to 21,904.04, 30,225.90 and 12,470.72 is: 17,208.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.04 : 30,225.90 = 12,470.72 : x
  2. Step 2: Convert to fraction form
    21,904.04/30,225.90 = 12,470.72/x
  3. Step 3: Cross multiply
    21,904.04x = 30,225.90 × 12,470.72
  4. Step 4: Simplify right side
    21,904.04x = 376,938,735.65
  5. Step 5: Solve for x
    x = 376,938,735.65/21,904.04
  6. Step 6: Final answer
    x = 17,208.64

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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.