Home / 20,465.90-28,204.35-17,931.50

Finding the Fourth Proportional to 20,465.90, 28,204.35 and 17,931.50

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Solution

The fourth proportional to 20,465.90, 28,204.35 and 17,931.50 is: 24,711.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.90 : 28,204.35 = 17,931.50 : x
  2. Step 2: Convert to fraction form
    20,465.90/28,204.35 = 17,931.50/x
  3. Step 3: Cross multiply
    20,465.90x = 28,204.35 × 17,931.50
  4. Step 4: Simplify right side
    20,465.90x = 505,746,302.03
  5. Step 5: Solve for x
    x = 505,746,302.03/20,465.90
  6. Step 6: Final answer
    x = 24,711.66

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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.