Home / 13,267.40-19,875.58-7,428.11

Finding the Fourth Proportional to 13,267.40, 19,875.58 and 7,428.11

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Solution

The fourth proportional to 13,267.40, 19,875.58 and 7,428.11 is: 11,127.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,267.40 : 19,875.58 = 7,428.11 : x
  2. Step 2: Convert to fraction form
    13,267.40/19,875.58 = 7,428.11/x
  3. Step 3: Cross multiply
    13,267.40x = 19,875.58 × 7,428.11
  4. Step 4: Simplify right side
    13,267.40x = 147,637,876.61
  5. Step 5: Solve for x
    x = 147,637,876.61/13,267.40
  6. Step 6: Final answer
    x = 11,127.87

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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.