Home / 14,685.36-20,265.40-7,970.68

Finding the Fourth Proportional to 14,685.36, 20,265.40 and 7,970.68

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Solution

The fourth proportional to 14,685.36, 20,265.40 and 7,970.68 is: 10,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685.36 : 20,265.40 = 7,970.68 : x
  2. Step 2: Convert to fraction form
    14,685.36/20,265.40 = 7,970.68/x
  3. Step 3: Cross multiply
    14,685.36x = 20,265.40 × 7,970.68
  4. Step 4: Simplify right side
    14,685.36x = 161,529,018.47
  5. Step 5: Solve for x
    x = 161,529,018.47/14,685.36
  6. Step 6: Final answer
    x = 10,999.32

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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.