Home / 19,689.80-29,534.70-18,384.20

Finding the Fourth Proportional to 19,689.80, 29,534.70 and 18,384.20

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Solution

The fourth proportional to 19,689.80, 29,534.70 and 18,384.20 is: 27,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.80 : 29,534.70 = 18,384.20 : x
  2. Step 2: Convert to fraction form
    19,689.80/29,534.70 = 18,384.20/x
  3. Step 3: Cross multiply
    19,689.80x = 29,534.70 × 18,384.20
  4. Step 4: Simplify right side
    19,689.80x = 542,971,831.74
  5. Step 5: Solve for x
    x = 542,971,831.74/19,689.80
  6. Step 6: Final answer
    x = 27,576.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.