Home / 13,488.65-18,614.36-7,520.20

Finding the Fourth Proportional to 13,488.65, 18,614.36 and 7,520.20

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Solution

The fourth proportional to 13,488.65, 18,614.36 and 7,520.20 is: 10,377.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.65 : 18,614.36 = 7,520.20 : x
  2. Step 2: Convert to fraction form
    13,488.65/18,614.36 = 7,520.20/x
  3. Step 3: Cross multiply
    13,488.65x = 18,614.36 × 7,520.20
  4. Step 4: Simplify right side
    13,488.65x = 139,983,710.07
  5. Step 5: Solve for x
    x = 139,983,710.07/13,488.65
  6. Step 6: Final answer
    x = 10,377.89

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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.