Home / 15,756.22-21,728.98-11,500.53

Finding the Fourth Proportional to 15,756.22, 21,728.98 and 11,500.53

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Solution

The fourth proportional to 15,756.22, 21,728.98 and 11,500.53 is: 15,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.22 : 21,728.98 = 11,500.53 : x
  2. Step 2: Convert to fraction form
    15,756.22/21,728.98 = 11,500.53/x
  3. Step 3: Cross multiply
    15,756.22x = 21,728.98 × 11,500.53
  4. Step 4: Simplify right side
    15,756.22x = 249,894,728.86
  5. Step 5: Solve for x
    x = 249,894,728.86/15,756.22
  6. Step 6: Final answer
    x = 15,860.07

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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.