Home / 13,275.57-18,320.40-7,307.67

Finding the Fourth Proportional to 13,275.57, 18,320.40 and 7,307.67

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Solution

The fourth proportional to 13,275.57, 18,320.40 and 7,307.67 is: 10,084.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.57 : 18,320.40 = 7,307.67 : x
  2. Step 2: Convert to fraction form
    13,275.57/18,320.40 = 7,307.67/x
  3. Step 3: Cross multiply
    13,275.57x = 18,320.40 × 7,307.67
  4. Step 4: Simplify right side
    13,275.57x = 133,879,437.47
  5. Step 5: Solve for x
    x = 133,879,437.47/13,275.57
  6. Step 6: Final answer
    x = 10,084.65

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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.