Home / 12,867.85-19,312.85-7,332.31

Finding the Fourth Proportional to 12,867.85, 19,312.85 and 7,332.31

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Solution

The fourth proportional to 12,867.85, 19,312.85 and 7,332.31 is: 11,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867.85 : 19,312.85 = 7,332.31 : x
  2. Step 2: Convert to fraction form
    12,867.85/19,312.85 = 7,332.31/x
  3. Step 3: Cross multiply
    12,867.85x = 19,312.85 × 7,332.31
  4. Step 4: Simplify right side
    12,867.85x = 141,607,803.18
  5. Step 5: Solve for x
    x = 141,607,803.18/12,867.85
  6. Step 6: Final answer
    x = 11,004.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.