Home / 13,870.19-19,138.65-7,901.98

Finding the Fourth Proportional to 13,870.19, 19,138.65 and 7,901.98

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Solution

The fourth proportional to 13,870.19, 19,138.65 and 7,901.98 is: 10,903.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.19 : 19,138.65 = 7,901.98 : x
  2. Step 2: Convert to fraction form
    13,870.19/19,138.65 = 7,901.98/x
  3. Step 3: Cross multiply
    13,870.19x = 19,138.65 × 7,901.98
  4. Step 4: Simplify right side
    13,870.19x = 151,233,229.53
  5. Step 5: Solve for x
    x = 151,233,229.53/13,870.19
  6. Step 6: Final answer
    x = 10,903.47

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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.