Home / 13,875.84-20,813.12-5,110.16

Finding the Fourth Proportional to 13,875.84, 20,813.12 and 5,110.16

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Solution

The fourth proportional to 13,875.84, 20,813.12 and 5,110.16 is: 7,665.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.84 : 20,813.12 = 5,110.16 : x
  2. Step 2: Convert to fraction form
    13,875.84/20,813.12 = 5,110.16/x
  3. Step 3: Cross multiply
    13,875.84x = 20,813.12 × 5,110.16
  4. Step 4: Simplify right side
    13,875.84x = 106,358,373.30
  5. Step 5: Solve for x
    x = 106,358,373.30/13,875.84
  6. Step 6: Final answer
    x = 7,665.00

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1.5x scale

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.