Home / 21,990.10-33,021.60-14,627.20

Finding the Fourth Proportional to 21,990.10, 33,021.60 and 14,627.20

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Solution

The fourth proportional to 21,990.10, 33,021.60 and 14,627.20 is: 21,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.10 : 33,021.60 = 14,627.20 : x
  2. Step 2: Convert to fraction form
    21,990.10/33,021.60 = 14,627.20/x
  3. Step 3: Cross multiply
    21,990.10x = 33,021.60 × 14,627.20
  4. Step 4: Simplify right side
    21,990.10x = 483,013,547.52
  5. Step 5: Solve for x
    x = 483,013,547.52/21,990.10
  6. Step 6: Final answer
    x = 21,965.05

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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.