Home / 20,954.04-31,435.44-18,862.80

Finding the Fourth Proportional to 20,954.04, 31,435.44 and 18,862.80

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Solution

The fourth proportional to 20,954.04, 31,435.44 and 18,862.80 is: 28,298.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.04 : 31,435.44 = 18,862.80 : x
  2. Step 2: Convert to fraction form
    20,954.04/31,435.44 = 18,862.80/x
  3. Step 3: Cross multiply
    20,954.04x = 31,435.44 × 18,862.80
  4. Step 4: Simplify right side
    20,954.04x = 592,960,417.63
  5. Step 5: Solve for x
    x = 592,960,417.63/20,954.04
  6. Step 6: Final answer
    x = 28,298.14

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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.