Home / 28,120.12-42,181.98-10,355.56

Finding the Fourth Proportional to 28,120.12, 42,181.98 and 10,355.56

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Solution

The fourth proportional to 28,120.12, 42,181.98 and 10,355.56 is: 15,534.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.12 : 42,181.98 = 10,355.56 : x
  2. Step 2: Convert to fraction form
    28,120.12/42,181.98 = 10,355.56/x
  3. Step 3: Cross multiply
    28,120.12x = 42,181.98 × 10,355.56
  4. Step 4: Simplify right side
    28,120.12x = 436,818,024.81
  5. Step 5: Solve for x
    x = 436,818,024.81/28,120.12
  6. Step 6: Final answer
    x = 15,534.00

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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.