Home / 30,985.64-42,758.80-17,556.12

Finding the Fourth Proportional to 30,985.64, 42,758.80 and 17,556.12

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Solution

The fourth proportional to 30,985.64, 42,758.80 and 17,556.12 is: 24,226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.64 : 42,758.80 = 17,556.12 : x
  2. Step 2: Convert to fraction form
    30,985.64/42,758.80 = 17,556.12/x
  3. Step 3: Cross multiply
    30,985.64x = 42,758.80 × 17,556.12
  4. Step 4: Simplify right side
    30,985.64x = 750,678,623.86
  5. Step 5: Solve for x
    x = 750,678,623.86/30,985.64
  6. Step 6: Final answer
    x = 24,226.66

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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.