Home / 30,637.60-45,907.80-20,237.20

Finding the Fourth Proportional to 30,637.60, 45,907.80 and 20,237.20

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Solution

The fourth proportional to 30,637.60, 45,907.80 and 20,237.20 is: 30,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,637.60 : 45,907.80 = 20,237.20 : x
  2. Step 2: Convert to fraction form
    30,637.60/45,907.80 = 20,237.20/x
  3. Step 3: Cross multiply
    30,637.60x = 45,907.80 × 20,237.20
  4. Step 4: Simplify right side
    30,637.60x = 929,045,330.16
  5. Step 5: Solve for x
    x = 929,045,330.16/30,637.60
  6. Step 6: Final answer
    x = 30,323.70

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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.