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Finding the Fourth Proportional to 19,205.11, 28,807.63 and 7,510.13

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Solution

The fourth proportional to 19,205.11, 28,807.63 and 7,510.13 is: 11,265.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.11 : 28,807.63 = 7,510.13 : x
  2. Step 2: Convert to fraction form
    19,205.11/28,807.63 = 7,510.13/x
  3. Step 3: Cross multiply
    19,205.11x = 28,807.63 × 7,510.13
  4. Step 4: Simplify right side
    19,205.11x = 216,349,046.29
  5. Step 5: Solve for x
    x = 216,349,046.29/19,205.11
  6. Step 6: Final answer
    x = 11,265.18

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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.