Home / 15,465.89-21,341.64-8,749.98

Finding the Fourth Proportional to 15,465.89, 21,341.64 and 8,749.98

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Solution

The fourth proportional to 15,465.89, 21,341.64 and 8,749.98 is: 12,074.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.89 : 21,341.64 = 8,749.98 : x
  2. Step 2: Convert to fraction form
    15,465.89/21,341.64 = 8,749.98/x
  3. Step 3: Cross multiply
    15,465.89x = 21,341.64 × 8,749.98
  4. Step 4: Simplify right side
    15,465.89x = 186,738,923.17
  5. Step 5: Solve for x
    x = 186,738,923.17/15,465.89
  6. Step 6: Final answer
    x = 12,074.24

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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.