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Finding the Fourth Proportional to 18,477.38, 25,510.50 and 12,810.08

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Solution

The fourth proportional to 18,477.38, 25,510.50 and 12,810.08 is: 17,686.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477.38 : 25,510.50 = 12,810.08 : x
  2. Step 2: Convert to fraction form
    18,477.38/25,510.50 = 12,810.08/x
  3. Step 3: Cross multiply
    18,477.38x = 25,510.50 × 12,810.08
  4. Step 4: Simplify right side
    18,477.38x = 326,791,418.29
  5. Step 5: Solve for x
    x = 326,791,418.29/18,477.38
  6. Step 6: Final answer
    x = 17,686.03

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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.