Home / 15,239.52-21,021.12-10,457.28

Finding the Fourth Proportional to 15,239.52, 21,021.12 and 10,457.28

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Solution

The fourth proportional to 15,239.52, 21,021.12 and 10,457.28 is: 14,424.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,239.52 : 21,021.12 = 10,457.28 : x
  2. Step 2: Convert to fraction form
    15,239.52/21,021.12 = 10,457.28/x
  3. Step 3: Cross multiply
    15,239.52x = 21,021.12 × 10,457.28
  4. Step 4: Simplify right side
    15,239.52x = 219,823,737.75
  5. Step 5: Solve for x
    x = 219,823,737.75/15,239.52
  6. Step 6: Final answer
    x = 14,424.58

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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.