Home / 30,607.04-42,231.30-20,012.24

Finding the Fourth Proportional to 30,607.04, 42,231.30 and 20,012.24

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Solution

The fourth proportional to 30,607.04, 42,231.30 and 20,012.24 is: 27,612.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,607.04 : 42,231.30 = 20,012.24 : x
  2. Step 2: Convert to fraction form
    30,607.04/42,231.30 = 20,012.24/x
  3. Step 3: Cross multiply
    30,607.04x = 42,231.30 × 20,012.24
  4. Step 4: Simplify right side
    30,607.04x = 845,142,911.11
  5. Step 5: Solve for x
    x = 845,142,911.11/30,607.04
  6. Step 6: Final answer
    x = 27,612.70

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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.