Home / 21,068.40-31,602.60-11,833.20

Finding the Fourth Proportional to 21,068.40, 31,602.60 and 11,833.20

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Solution

The fourth proportional to 21,068.40, 31,602.60 and 11,833.20 is: 17,749.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.40 : 31,602.60 = 11,833.20 : x
  2. Step 2: Convert to fraction form
    21,068.40/31,602.60 = 11,833.20/x
  3. Step 3: Cross multiply
    21,068.40x = 31,602.60 × 11,833.20
  4. Step 4: Simplify right side
    21,068.40x = 373,959,886.32
  5. Step 5: Solve for x
    x = 373,959,886.32/21,068.40
  6. Step 6: Final answer
    x = 17,749.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.