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Finding the Fourth Proportional to 11,070.80, 15,275 and 7,492.40

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Solution

The fourth proportional to 11,070.80, 15,275 and 7,492.40 is: 10,337.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,070.80 : 15,275 = 7,492.40 : x
  2. Step 2: Convert to fraction form
    11,070.80/15,275 = 7,492.40/x
  3. Step 3: Cross multiply
    11,070.80x = 15,275 × 7,492.40
  4. Step 4: Simplify right side
    11,070.80x = 114,446,410
  5. Step 5: Solve for x
    x = 114,446,410/11,070.80
  6. Step 6: Final answer
    x = 10,337.68

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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.