Home / 15,636.02-21,575.76-12,457.40

Finding the Fourth Proportional to 15,636.02, 21,575.76 and 12,457.40

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Solution

The fourth proportional to 15,636.02, 21,575.76 and 12,457.40 is: 17,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,636.02 : 21,575.76 = 12,457.40 : x
  2. Step 2: Convert to fraction form
    15,636.02/21,575.76 = 12,457.40/x
  3. Step 3: Cross multiply
    15,636.02x = 21,575.76 × 12,457.40
  4. Step 4: Simplify right side
    15,636.02x = 268,777,764.75
  5. Step 5: Solve for x
    x = 268,777,764.75/15,636.02
  6. Step 6: Final answer
    x = 17,189.66

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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.