Home / 13,817.92-19,070.72-7,848.40

Finding the Fourth Proportional to 13,817.92, 19,070.72 and 7,848.40

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Solution

The fourth proportional to 13,817.92, 19,070.72 and 7,848.40 is: 10,831.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.92 : 19,070.72 = 7,848.40 : x
  2. Step 2: Convert to fraction form
    13,817.92/19,070.72 = 7,848.40/x
  3. Step 3: Cross multiply
    13,817.92x = 19,070.72 × 7,848.40
  4. Step 4: Simplify right side
    13,817.92x = 149,674,638.85
  5. Step 5: Solve for x
    x = 149,674,638.85/13,817.92
  6. Step 6: Final answer
    x = 10,831.92

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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.