Home / 16,420.47-22,655.75-9,703.14

Finding the Fourth Proportional to 16,420.47, 22,655.75 and 9,703.14

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Solution

The fourth proportional to 16,420.47, 22,655.75 and 9,703.14 is: 13,387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,420.47 : 22,655.75 = 9,703.14 : x
  2. Step 2: Convert to fraction form
    16,420.47/22,655.75 = 9,703.14/x
  3. Step 3: Cross multiply
    16,420.47x = 22,655.75 × 9,703.14
  4. Step 4: Simplify right side
    16,420.47x = 219,831,865.54
  5. Step 5: Solve for x
    x = 219,831,865.54/16,420.47
  6. Step 6: Final answer
    x = 13,387.67

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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.