Home / 28,015.02-38,662.16-15,439.77

Finding the Fourth Proportional to 28,015.02, 38,662.16 and 15,439.77

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Solution

The fourth proportional to 28,015.02, 38,662.16 and 15,439.77 is: 21,307.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.02 : 38,662.16 = 15,439.77 : x
  2. Step 2: Convert to fraction form
    28,015.02/38,662.16 = 15,439.77/x
  3. Step 3: Cross multiply
    28,015.02x = 38,662.16 × 15,439.77
  4. Step 4: Simplify right side
    28,015.02x = 596,934,858.10
  5. Step 5: Solve for x
    x = 596,934,858.10/28,015.02
  6. Step 6: Final answer
    x = 21,307.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.