Home / 28,829.12-39,783.28-16,900.40

Finding the Fourth Proportional to 28,829.12, 39,783.28 and 16,900.40

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Solution

The fourth proportional to 28,829.12, 39,783.28 and 16,900.40 is: 23,322.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,829.12 : 39,783.28 = 16,900.40 : x
  2. Step 2: Convert to fraction form
    28,829.12/39,783.28 = 16,900.40/x
  3. Step 3: Cross multiply
    28,829.12x = 39,783.28 × 16,900.40
  4. Step 4: Simplify right side
    28,829.12x = 672,353,162.89
  5. Step 5: Solve for x
    x = 672,353,162.89/28,829.12
  6. Step 6: Final answer
    x = 23,322.02

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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.