Home / 21,320.43-31,981.06-7,283.67

Finding the Fourth Proportional to 21,320.43, 31,981.06 and 7,283.67

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Solution

The fourth proportional to 21,320.43, 31,981.06 and 7,283.67 is: 10,925.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.43 : 31,981.06 = 7,283.67 : x
  2. Step 2: Convert to fraction form
    21,320.43/31,981.06 = 7,283.67/x
  3. Step 3: Cross multiply
    21,320.43x = 31,981.06 × 7,283.67
  4. Step 4: Simplify right side
    21,320.43x = 232,939,487.29
  5. Step 5: Solve for x
    x = 232,939,487.29/21,320.43
  6. Step 6: Final answer
    x = 10,925.65

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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.