Home / 28,501.47-42,714.54-20,630.30

Finding the Fourth Proportional to 28,501.47, 42,714.54 and 20,630.30

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Solution

The fourth proportional to 28,501.47, 42,714.54 and 20,630.30 is: 30,918.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.47 : 42,714.54 = 20,630.30 : x
  2. Step 2: Convert to fraction form
    28,501.47/42,714.54 = 20,630.30/x
  3. Step 3: Cross multiply
    28,501.47x = 42,714.54 × 20,630.30
  4. Step 4: Simplify right side
    28,501.47x = 881,213,560.99
  5. Step 5: Solve for x
    x = 881,213,560.99/28,501.47
  6. Step 6: Final answer
    x = 30,918.18

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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.