Home / 21,669.18-32,547.48-12,921.18

Finding the Fourth Proportional to 21,669.18, 32,547.48 and 12,921.18

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Solution

The fourth proportional to 21,669.18, 32,547.48 and 12,921.18 is: 19,407.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.18 : 32,547.48 = 12,921.18 : x
  2. Step 2: Convert to fraction form
    21,669.18/32,547.48 = 12,921.18/x
  3. Step 3: Cross multiply
    21,669.18x = 32,547.48 × 12,921.18
  4. Step 4: Simplify right side
    21,669.18x = 420,551,847.63
  5. Step 5: Solve for x
    x = 420,551,847.63/21,669.18
  6. Step 6: Final answer
    x = 19,407.83

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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.