Home / 20,483.99-28,265.95-15,109.35

Finding the Fourth Proportional to 20,483.99, 28,265.95 and 15,109.35

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Solution

The fourth proportional to 20,483.99, 28,265.95 and 15,109.35 is: 20,849.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.99 : 28,265.95 = 15,109.35 : x
  2. Step 2: Convert to fraction form
    20,483.99/28,265.95 = 15,109.35/x
  3. Step 3: Cross multiply
    20,483.99x = 28,265.95 × 15,109.35
  4. Step 4: Simplify right side
    20,483.99x = 427,080,152.46
  5. Step 5: Solve for x
    x = 427,080,152.46/20,483.99
  6. Step 6: Final answer
    x = 20,849.46

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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.