Home / 20,840.85-28,730.48-14,862.15

Finding the Fourth Proportional to 20,840.85, 28,730.48 and 14,862.15

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Solution

The fourth proportional to 20,840.85, 28,730.48 and 14,862.15 is: 20,488.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.85 : 28,730.48 = 14,862.15 : x
  2. Step 2: Convert to fraction form
    20,840.85/28,730.48 = 14,862.15/x
  3. Step 3: Cross multiply
    20,840.85x = 28,730.48 × 14,862.15
  4. Step 4: Simplify right side
    20,840.85x = 426,996,703.33
  5. Step 5: Solve for x
    x = 426,996,703.33/20,840.85
  6. Step 6: Final answer
    x = 20,488.45

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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.