Home / 21,051.64-29,051.40-11,492.20

Finding the Fourth Proportional to 21,051.64, 29,051.40 and 11,492.20

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Solution

The fourth proportional to 21,051.64, 29,051.40 and 11,492.20 is: 15,859.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.64 : 29,051.40 = 11,492.20 : x
  2. Step 2: Convert to fraction form
    21,051.64/29,051.40 = 11,492.20/x
  3. Step 3: Cross multiply
    21,051.64x = 29,051.40 × 11,492.20
  4. Step 4: Simplify right side
    21,051.64x = 333,864,499.08
  5. Step 5: Solve for x
    x = 333,864,499.08/21,051.64
  6. Step 6: Final answer
    x = 15,859.31

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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.