Home / 21,457.90-29,612.26-11,898.19

Finding the Fourth Proportional to 21,457.90, 29,612.26 and 11,898.19

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Solution

The fourth proportional to 21,457.90, 29,612.26 and 11,898.19 is: 16,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.90 : 29,612.26 = 11,898.19 : x
  2. Step 2: Convert to fraction form
    21,457.90/29,612.26 = 11,898.19/x
  3. Step 3: Cross multiply
    21,457.90x = 29,612.26 × 11,898.19
  4. Step 4: Simplify right side
    21,457.90x = 352,332,332.82
  5. Step 5: Solve for x
    x = 352,332,332.82/21,457.90
  6. Step 6: Final answer
    x = 16,419.70

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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.