Home / 30,407.76-41,929.59-19,777.68

Finding the Fourth Proportional to 30,407.76, 41,929.59 and 19,777.68

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Solution

The fourth proportional to 30,407.76, 41,929.59 and 19,777.68 is: 27,271.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,407.76 : 41,929.59 = 19,777.68 : x
  2. Step 2: Convert to fraction form
    30,407.76/41,929.59 = 19,777.68/x
  3. Step 3: Cross multiply
    30,407.76x = 41,929.59 × 19,777.68
  4. Step 4: Simplify right side
    30,407.76x = 829,270,013.55
  5. Step 5: Solve for x
    x = 829,270,013.55/30,407.76
  6. Step 6: Final answer
    x = 27,271.66

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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.