Home / 21,345.04-29,457.16-11,913.68

Finding the Fourth Proportional to 21,345.04, 29,457.16 and 11,913.68

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Solution

The fourth proportional to 21,345.04, 29,457.16 and 11,913.68 is: 16,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.04 : 29,457.16 = 11,913.68 : x
  2. Step 2: Convert to fraction form
    21,345.04/29,457.16 = 11,913.68/x
  3. Step 3: Cross multiply
    21,345.04x = 29,457.16 × 11,913.68
  4. Step 4: Simplify right side
    21,345.04x = 350,943,177.95
  5. Step 5: Solve for x
    x = 350,943,177.95/21,345.04
  6. Step 6: Final answer
    x = 16,441.44

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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.