Home / 28,284.48-42,424.80-13,503.60

Finding the Fourth Proportional to 28,284.48, 42,424.80 and 13,503.60

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Solution

The fourth proportional to 28,284.48, 42,424.80 and 13,503.60 is: 20,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.48 : 42,424.80 = 13,503.60 : x
  2. Step 2: Convert to fraction form
    28,284.48/42,424.80 = 13,503.60/x
  3. Step 3: Cross multiply
    28,284.48x = 42,424.80 × 13,503.60
  4. Step 4: Simplify right side
    28,284.48x = 572,887,529.28
  5. Step 5: Solve for x
    x = 572,887,529.28/28,284.48
  6. Step 6: Final answer
    x = 20,254.48

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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.