Home / 21,523.51-29,700.84-12,090.25

Finding the Fourth Proportional to 21,523.51, 29,700.84 and 12,090.25

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Solution

The fourth proportional to 21,523.51, 29,700.84 and 12,090.25 is: 16,683.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.51 : 29,700.84 = 12,090.25 : x
  2. Step 2: Convert to fraction form
    21,523.51/29,700.84 = 12,090.25/x
  3. Step 3: Cross multiply
    21,523.51x = 29,700.84 × 12,090.25
  4. Step 4: Simplify right side
    21,523.51x = 359,090,580.81
  5. Step 5: Solve for x
    x = 359,090,580.81/21,523.51
  6. Step 6: Final answer
    x = 16,683.64

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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.