Home / 21,225.84-29,265.36-14,136.72

Finding the Fourth Proportional to 21,225.84, 29,265.36 and 14,136.72

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Solution

The fourth proportional to 21,225.84, 29,265.36 and 14,136.72 is: 19,491.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225.84 : 29,265.36 = 14,136.72 : x
  2. Step 2: Convert to fraction form
    21,225.84/29,265.36 = 14,136.72/x
  3. Step 3: Cross multiply
    21,225.84x = 29,265.36 × 14,136.72
  4. Step 4: Simplify right side
    21,225.84x = 413,716,200.02
  5. Step 5: Solve for x
    x = 413,716,200.02/21,225.84
  6. Step 6: Final answer
    x = 19,491.16

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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.