Home / 21,015.01-31,501.23-13,624.15

Finding the Fourth Proportional to 21,015.01, 31,501.23 and 13,624.15

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Solution

The fourth proportional to 21,015.01, 31,501.23 and 13,624.15 is: 20,422.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.01 : 31,501.23 = 13,624.15 : x
  2. Step 2: Convert to fraction form
    21,015.01/31,501.23 = 13,624.15/x
  3. Step 3: Cross multiply
    21,015.01x = 31,501.23 × 13,624.15
  4. Step 4: Simplify right side
    21,015.01x = 429,177,482.70
  5. Step 5: Solve for x
    x = 429,177,482.70/21,015.01
  6. Step 6: Final answer
    x = 20,422.43

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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.