Home / 28,600.10-42,912.30-13,801.40

Finding the Fourth Proportional to 28,600.10, 42,912.30 and 13,801.40

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Solution

The fourth proportional to 28,600.10, 42,912.30 and 13,801.40 is: 20,707.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,600.10 : 42,912.30 = 13,801.40 : x
  2. Step 2: Convert to fraction form
    28,600.10/42,912.30 = 13,801.40/x
  3. Step 3: Cross multiply
    28,600.10x = 42,912.30 × 13,801.40
  4. Step 4: Simplify right side
    28,600.10x = 592,249,817.22
  5. Step 5: Solve for x
    x = 592,249,817.22/28,600.10
  6. Step 6: Final answer
    x = 20,707.96

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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.