Home / 16,420.77-22,663.53-9,705.87

Finding the Fourth Proportional to 16,420.77, 22,663.53 and 9,705.87

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Solution

The fourth proportional to 16,420.77, 22,663.53 and 9,705.87 is: 13,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,420.77 : 22,663.53 = 9,705.87 : x
  2. Step 2: Convert to fraction form
    16,420.77/22,663.53 = 9,705.87/x
  3. Step 3: Cross multiply
    16,420.77x = 22,663.53 × 9,705.87
  4. Step 4: Simplify right side
    16,420.77x = 219,969,275.92
  5. Step 5: Solve for x
    x = 219,969,275.92/16,420.77
  6. Step 6: Final answer
    x = 13,395.80

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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.