Home / 28,899.90-39,881.63-20,298.17

Finding the Fourth Proportional to 28,899.90, 39,881.63 and 20,298.17

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Solution

The fourth proportional to 28,899.90, 39,881.63 and 20,298.17 is: 28,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,899.90 : 39,881.63 = 20,298.17 : x
  2. Step 2: Convert to fraction form
    28,899.90/39,881.63 = 20,298.17/x
  3. Step 3: Cross multiply
    28,899.90x = 39,881.63 × 20,298.17
  4. Step 4: Simplify right side
    28,899.90x = 809,523,804.72
  5. Step 5: Solve for x
    x = 809,523,804.72/28,899.90
  6. Step 6: Final answer
    x = 28,011.30

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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.