Home / 30,631.04-42,264.36-20,036.24

Finding the Fourth Proportional to 30,631.04, 42,264.36 and 20,036.24

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Solution

The fourth proportional to 30,631.04, 42,264.36 and 20,036.24 is: 27,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631.04 : 42,264.36 = 20,036.24 : x
  2. Step 2: Convert to fraction form
    30,631.04/42,264.36 = 20,036.24/x
  3. Step 3: Cross multiply
    30,631.04x = 42,264.36 × 20,036.24
  4. Step 4: Simplify right side
    30,631.04x = 846,818,860.41
  5. Step 5: Solve for x
    x = 846,818,860.41/30,631.04
  6. Step 6: Final answer
    x = 27,645.78

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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.