Home / 28,573.60-42,860.40-13,021.60

Finding the Fourth Proportional to 28,573.60, 42,860.40 and 13,021.60

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Solution

The fourth proportional to 28,573.60, 42,860.40 and 13,021.60 is: 19,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,573.60 : 42,860.40 = 13,021.60 : x
  2. Step 2: Convert to fraction form
    28,573.60/42,860.40 = 13,021.60/x
  3. Step 3: Cross multiply
    28,573.60x = 42,860.40 × 13,021.60
  4. Step 4: Simplify right side
    28,573.60x = 558,110,984.64
  5. Step 5: Solve for x
    x = 558,110,984.64/28,573.60
  6. Step 6: Final answer
    x = 19,532.40

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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.