Home / 20,482.79-28,266.27-11,530.36

Finding the Fourth Proportional to 20,482.79, 28,266.27 and 11,530.36

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Solution

The fourth proportional to 20,482.79, 28,266.27 and 11,530.36 is: 15,911.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.79 : 28,266.27 = 11,530.36 : x
  2. Step 2: Convert to fraction form
    20,482.79/28,266.27 = 11,530.36/x
  3. Step 3: Cross multiply
    20,482.79x = 28,266.27 × 11,530.36
  4. Step 4: Simplify right side
    20,482.79x = 325,920,261.05
  5. Step 5: Solve for x
    x = 325,920,261.05/20,482.79
  6. Step 6: Final answer
    x = 15,911.91

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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.