Home / 15,439.86-21,295.76-9,775.53

Finding the Fourth Proportional to 15,439.86, 21,295.76 and 9,775.53

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Solution

The fourth proportional to 15,439.86, 21,295.76 and 9,775.53 is: 13,483.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.86 : 21,295.76 = 9,775.53 : x
  2. Step 2: Convert to fraction form
    15,439.86/21,295.76 = 9,775.53/x
  3. Step 3: Cross multiply
    15,439.86x = 21,295.76 × 9,775.53
  4. Step 4: Simplify right side
    15,439.86x = 208,177,291.88
  5. Step 5: Solve for x
    x = 208,177,291.88/15,439.86
  6. Step 6: Final answer
    x = 13,483.11

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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.