Home / 13,240.08-18,264.48-7,931.28

Finding the Fourth Proportional to 13,240.08, 18,264.48 and 7,931.28

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Solution

The fourth proportional to 13,240.08, 18,264.48 and 7,931.28 is: 10,941.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.08 : 18,264.48 = 7,931.28 : x
  2. Step 2: Convert to fraction form
    13,240.08/18,264.48 = 7,931.28/x
  3. Step 3: Cross multiply
    13,240.08x = 18,264.48 × 7,931.28
  4. Step 4: Simplify right side
    13,240.08x = 144,860,704.93
  5. Step 5: Solve for x
    x = 144,860,704.93/13,240.08
  6. Step 6: Final answer
    x = 10,941.07

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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.