Home / 30,985.21-42,750.45-17,556.18

Finding the Fourth Proportional to 30,985.21, 42,750.45 and 17,556.18

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Solution

The fourth proportional to 30,985.21, 42,750.45 and 17,556.18 is: 24,222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.21 : 42,750.45 = 17,556.18 : x
  2. Step 2: Convert to fraction form
    30,985.21/42,750.45 = 17,556.18/x
  3. Step 3: Cross multiply
    30,985.21x = 42,750.45 × 17,556.18
  4. Step 4: Simplify right side
    30,985.21x = 750,534,595.28
  5. Step 5: Solve for x
    x = 750,534,595.28/30,985.21
  6. Step 6: Final answer
    x = 24,222.35

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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.