Home / 28,205.13-42,290.15-19,430.13

Finding the Fourth Proportional to 28,205.13, 42,290.15 and 19,430.13

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Solution

The fourth proportional to 28,205.13, 42,290.15 and 19,430.13 is: 29,133.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.13 : 42,290.15 = 19,430.13 : x
  2. Step 2: Convert to fraction form
    28,205.13/42,290.15 = 19,430.13/x
  3. Step 3: Cross multiply
    28,205.13x = 42,290.15 × 19,430.13
  4. Step 4: Simplify right side
    28,205.13x = 821,703,015.07
  5. Step 5: Solve for x
    x = 821,703,015.07/28,205.13
  6. Step 6: Final answer
    x = 29,133.11

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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.