Home / 28,503.68-42,756.26-13,507.28

Finding the Fourth Proportional to 28,503.68, 42,756.26 and 13,507.28

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Solution

The fourth proportional to 28,503.68, 42,756.26 and 13,507.28 is: 20,261.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,503.68 : 42,756.26 = 13,507.28 : x
  2. Step 2: Convert to fraction form
    28,503.68/42,756.26 = 13,507.28/x
  3. Step 3: Cross multiply
    28,503.68x = 42,756.26 × 13,507.28
  4. Step 4: Simplify right side
    28,503.68x = 577,520,775.57
  5. Step 5: Solve for x
    x = 577,520,775.57/28,503.68
  6. Step 6: Final answer
    x = 20,261.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.