Home / 21,567.90-29,763.69-12,136.47

Finding the Fourth Proportional to 21,567.90, 29,763.69 and 12,136.47

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Solution

The fourth proportional to 21,567.90, 29,763.69 and 12,136.47 is: 16,748.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,567.90 : 29,763.69 = 12,136.47 : x
  2. Step 2: Convert to fraction form
    21,567.90/29,763.69 = 12,136.47/x
  3. Step 3: Cross multiply
    21,567.90x = 29,763.69 × 12,136.47
  4. Step 4: Simplify right side
    21,567.90x = 361,226,130.77
  5. Step 5: Solve for x
    x = 361,226,130.77/21,567.90
  6. Step 6: Final answer
    x = 16,748.32

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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.