Home / 30,897.27-42,636.24-18,957.87

Finding the Fourth Proportional to 30,897.27, 42,636.24 and 18,957.87

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Solution

The fourth proportional to 30,897.27, 42,636.24 and 18,957.87 is: 26,160.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,897.27 : 42,636.24 = 18,957.87 : x
  2. Step 2: Convert to fraction form
    30,897.27/42,636.24 = 18,957.87/x
  3. Step 3: Cross multiply
    30,897.27x = 42,636.24 × 18,957.87
  4. Step 4: Simplify right side
    30,897.27x = 808,292,295.21
  5. Step 5: Solve for x
    x = 808,292,295.21/30,897.27
  6. Step 6: Final answer
    x = 26,160.64

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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.