Home / 28,856.08-39,820.36-18,106.74

Finding the Fourth Proportional to 28,856.08, 39,820.36 and 18,106.74

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Solution

The fourth proportional to 28,856.08, 39,820.36 and 18,106.74 is: 24,986.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.08 : 39,820.36 = 18,106.74 : x
  2. Step 2: Convert to fraction form
    28,856.08/39,820.36 = 18,106.74/x
  3. Step 3: Cross multiply
    28,856.08x = 39,820.36 × 18,106.74
  4. Step 4: Simplify right side
    28,856.08x = 721,017,009.29
  5. Step 5: Solve for x
    x = 721,017,009.29/28,856.08
  6. Step 6: Final answer
    x = 24,986.66

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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.