Home / 30,902.93-42,653-18,160.20

Finding the Fourth Proportional to 30,902.93, 42,653 and 18,160.20

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Solution

The fourth proportional to 30,902.93, 42,653 and 18,160.20 is: 25,065.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902.93 : 42,653 = 18,160.20 : x
  2. Step 2: Convert to fraction form
    30,902.93/42,653 = 18,160.20/x
  3. Step 3: Cross multiply
    30,902.93x = 42,653 × 18,160.20
  4. Step 4: Simplify right side
    30,902.93x = 774,587,117.23
  5. Step 5: Solve for x
    x = 774,587,117.23/30,902.93
  6. Step 6: Final answer
    x = 25,065.17

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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.