Home / 13,985.28-20,989.44-7,061.76

Finding the Fourth Proportional to 13,985.28, 20,989.44 and 7,061.76

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Solution

The fourth proportional to 13,985.28, 20,989.44 and 7,061.76 is: 10,598.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.28 : 20,989.44 = 7,061.76 : x
  2. Step 2: Convert to fraction form
    13,985.28/20,989.44 = 7,061.76/x
  3. Step 3: Cross multiply
    13,985.28x = 20,989.44 × 7,061.76
  4. Step 4: Simplify right side
    13,985.28x = 148,222,387.81
  5. Step 5: Solve for x
    x = 148,222,387.81/13,985.28
  6. Step 6: Final answer
    x = 10,598.46

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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.