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Finding the Fourth Proportional to 13,010.99, 19,510.41 and 4,689.91

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Solution

The fourth proportional to 13,010.99, 19,510.41 and 4,689.91 is: 7,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,010.99 : 19,510.41 = 4,689.91 : x
  2. Step 2: Convert to fraction form
    13,010.99/19,510.41 = 4,689.91/x
  3. Step 3: Cross multiply
    13,010.99x = 19,510.41 × 4,689.91
  4. Step 4: Simplify right side
    13,010.99x = 91,502,066.96
  5. Step 5: Solve for x
    x = 91,502,066.96/13,010.99
  6. Step 6: Final answer
    x = 7,032.68

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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.