Home / 12,898.51-19,356.40-4,690.51

Finding the Fourth Proportional to 12,898.51, 19,356.40 and 4,690.51

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Solution

The fourth proportional to 12,898.51, 19,356.40 and 4,690.51 is: 7,038.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.51 : 19,356.40 = 4,690.51 : x
  2. Step 2: Convert to fraction form
    12,898.51/19,356.40 = 4,690.51/x
  3. Step 3: Cross multiply
    12,898.51x = 19,356.40 × 4,690.51
  4. Step 4: Simplify right side
    12,898.51x = 90,791,364.31
  5. Step 5: Solve for x
    x = 90,791,364.31/12,898.51
  6. Step 6: Final answer
    x = 7,038.90

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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.