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Finding the Fourth Proportional to 15,173.61, 20,950.02 and 9,510.63

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Solution

The fourth proportional to 15,173.61, 20,950.02 and 9,510.63 is: 13,131.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,173.61 : 20,950.02 = 9,510.63 : x
  2. Step 2: Convert to fraction form
    15,173.61/20,950.02 = 9,510.63/x
  3. Step 3: Cross multiply
    15,173.61x = 20,950.02 × 9,510.63
  4. Step 4: Simplify right side
    15,173.61x = 199,247,888.71
  5. Step 5: Solve for x
    x = 199,247,888.71/15,173.61
  6. Step 6: Final answer
    x = 13,131.21

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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.