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Finding the Fourth Proportional to 18,437, 25,434.30 and 12,470.76

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Solution

The fourth proportional to 18,437, 25,434.30 and 12,470.76 is: 17,203.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,437 : 25,434.30 = 12,470.76 : x
  2. Step 2: Convert to fraction form
    18,437/25,434.30 = 12,470.76/x
  3. Step 3: Cross multiply
    18,437x = 25,434.30 × 12,470.76
  4. Step 4: Simplify right side
    18,437x = 317,185,051.07
  5. Step 5: Solve for x
    x = 317,185,051.07/18,437
  6. Step 6: Final answer
    x = 17,203.72

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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.