Home / 30,913.55-42,647.15-18,160.98

Finding the Fourth Proportional to 30,913.55, 42,647.15 and 18,160.98

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Solution

The fourth proportional to 30,913.55, 42,647.15 and 18,160.98 is: 25,054.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,913.55 : 42,647.15 = 18,160.98 : x
  2. Step 2: Convert to fraction form
    30,913.55/42,647.15 = 18,160.98/x
  3. Step 3: Cross multiply
    30,913.55x = 42,647.15 × 18,160.98
  4. Step 4: Simplify right side
    30,913.55x = 774,514,038.21
  5. Step 5: Solve for x
    x = 774,514,038.21/30,913.55
  6. Step 6: Final answer
    x = 25,054.19

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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.