Home / 28,101.88-38,782.40-15,526.64

Finding the Fourth Proportional to 28,101.88, 38,782.40 and 15,526.64

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Solution

The fourth proportional to 28,101.88, 38,782.40 and 15,526.64 is: 21,427.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.88 : 38,782.40 = 15,526.64 : x
  2. Step 2: Convert to fraction form
    28,101.88/38,782.40 = 15,526.64/x
  3. Step 3: Cross multiply
    28,101.88x = 38,782.40 × 15,526.64
  4. Step 4: Simplify right side
    28,101.88x = 602,160,363.14
  5. Step 5: Solve for x
    x = 602,160,363.14/28,101.88
  6. Step 6: Final answer
    x = 21,427.76

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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.