Home / 13,438.98-18,545.63-7,470.50

Finding the Fourth Proportional to 13,438.98, 18,545.63 and 7,470.50

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Solution

The fourth proportional to 13,438.98, 18,545.63 and 7,470.50 is: 10,309.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.98 : 18,545.63 = 7,470.50 : x
  2. Step 2: Convert to fraction form
    13,438.98/18,545.63 = 7,470.50/x
  3. Step 3: Cross multiply
    13,438.98x = 18,545.63 × 7,470.50
  4. Step 4: Simplify right side
    13,438.98x = 138,544,998.83
  5. Step 5: Solve for x
    x = 138,544,998.83/13,438.98
  6. Step 6: Final answer
    x = 10,309.19

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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.