Home / 30,899.51-42,641.65-18,153.22

Finding the Fourth Proportional to 30,899.51, 42,641.65 and 18,153.22

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Solution

The fourth proportional to 30,899.51, 42,641.65 and 18,153.22 is: 25,051.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,899.51 : 42,641.65 = 18,153.22 : x
  2. Step 2: Convert to fraction form
    30,899.51/42,641.65 = 18,153.22/x
  3. Step 3: Cross multiply
    30,899.51x = 42,641.65 × 18,153.22
  4. Step 4: Simplify right side
    30,899.51x = 774,083,162.85
  5. Step 5: Solve for x
    x = 774,083,162.85/30,899.51
  6. Step 6: Final answer
    x = 25,051.64

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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.