Home / 30,514.95-42,096.65-18,420.03

Finding the Fourth Proportional to 30,514.95, 42,096.65 and 18,420.03

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Solution

The fourth proportional to 30,514.95, 42,096.65 and 18,420.03 is: 25,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,514.95 : 42,096.65 = 18,420.03 : x
  2. Step 2: Convert to fraction form
    30,514.95/42,096.65 = 18,420.03/x
  3. Step 3: Cross multiply
    30,514.95x = 42,096.65 × 18,420.03
  4. Step 4: Simplify right side
    30,514.95x = 775,421,463.80
  5. Step 5: Solve for x
    x = 775,421,463.80/30,514.95
  6. Step 6: Final answer
    x = 25,411.20

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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.