Home / 13,276.18-18,320.70-7,307.50

Finding the Fourth Proportional to 13,276.18, 18,320.70 and 7,307.50

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Solution

The fourth proportional to 13,276.18, 18,320.70 and 7,307.50 is: 10,084.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.18 : 18,320.70 = 7,307.50 : x
  2. Step 2: Convert to fraction form
    13,276.18/18,320.70 = 7,307.50/x
  3. Step 3: Cross multiply
    13,276.18x = 18,320.70 × 7,307.50
  4. Step 4: Simplify right side
    13,276.18x = 133,878,515.25
  5. Step 5: Solve for x
    x = 133,878,515.25/13,276.18
  6. Step 6: Final answer
    x = 10,084.11

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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.