Home / 18,639.34-25,719.95-12,602.72

Finding the Fourth Proportional to 18,639.34, 25,719.95 and 12,602.72

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Solution

The fourth proportional to 18,639.34, 25,719.95 and 12,602.72 is: 17,390.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.34 : 25,719.95 = 12,602.72 : x
  2. Step 2: Convert to fraction form
    18,639.34/25,719.95 = 12,602.72/x
  3. Step 3: Cross multiply
    18,639.34x = 25,719.95 × 12,602.72
  4. Step 4: Simplify right side
    18,639.34x = 324,141,424.07
  5. Step 5: Solve for x
    x = 324,141,424.07/18,639.34
  6. Step 6: Final answer
    x = 17,390.18

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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.