Home / 13,558.17-18,711.11-7,590.21

Finding the Fourth Proportional to 13,558.17, 18,711.11 and 7,590.21

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Solution

The fourth proportional to 13,558.17, 18,711.11 and 7,590.21 is: 10,474.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.17 : 18,711.11 = 7,590.21 : x
  2. Step 2: Convert to fraction form
    13,558.17/18,711.11 = 7,590.21/x
  3. Step 3: Cross multiply
    13,558.17x = 18,711.11 × 7,590.21
  4. Step 4: Simplify right side
    13,558.17x = 142,021,254.23
  5. Step 5: Solve for x
    x = 142,021,254.23/13,558.17
  6. Step 6: Final answer
    x = 10,474.96

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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.