Home / 28,514.34-42,790.95-12,942.90

Finding the Fourth Proportional to 28,514.34, 42,790.95 and 12,942.90

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Solution

The fourth proportional to 28,514.34, 42,790.95 and 12,942.90 is: 19,423.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.34 : 42,790.95 = 12,942.90 : x
  2. Step 2: Convert to fraction form
    28,514.34/42,790.95 = 12,942.90/x
  3. Step 3: Cross multiply
    28,514.34x = 42,790.95 × 12,942.90
  4. Step 4: Simplify right side
    28,514.34x = 553,838,986.76
  5. Step 5: Solve for x
    x = 553,838,986.76/28,514.34
  6. Step 6: Final answer
    x = 19,423.17

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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.