Home / 14,943.47-20,615.06-9,640

Finding the Fourth Proportional to 14,943.47, 20,615.06 and 9,640

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Solution

The fourth proportional to 14,943.47, 20,615.06 and 9,640 is: 13,298.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,943.47 : 20,615.06 = 9,640 : x
  2. Step 2: Convert to fraction form
    14,943.47/20,615.06 = 9,640/x
  3. Step 3: Cross multiply
    14,943.47x = 20,615.06 × 9,640
  4. Step 4: Simplify right side
    14,943.47x = 198,729,178.40
  5. Step 5: Solve for x
    x = 198,729,178.40/14,943.47
  6. Step 6: Final answer
    x = 13,298.73

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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.