Home / 14,219.13-19,623-7,931.50

Finding the Fourth Proportional to 14,219.13, 19,623 and 7,931.50

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Solution

The fourth proportional to 14,219.13, 19,623 and 7,931.50 is: 10,945.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,219.13 : 19,623 = 7,931.50 : x
  2. Step 2: Convert to fraction form
    14,219.13/19,623 = 7,931.50/x
  3. Step 3: Cross multiply
    14,219.13x = 19,623 × 7,931.50
  4. Step 4: Simplify right side
    14,219.13x = 155,639,824.50
  5. Step 5: Solve for x
    x = 155,639,824.50/14,219.13
  6. Step 6: Final answer
    x = 10,945.81

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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.