Home / 15,455.65-21,312.76-13,224.91

Finding the Fourth Proportional to 15,455.65, 21,312.76 and 13,224.91

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Solution

The fourth proportional to 15,455.65, 21,312.76 and 13,224.91 is: 18,236.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.65 : 21,312.76 = 13,224.91 : x
  2. Step 2: Convert to fraction form
    15,455.65/21,312.76 = 13,224.91/x
  3. Step 3: Cross multiply
    15,455.65x = 21,312.76 × 13,224.91
  4. Step 4: Simplify right side
    15,455.65x = 281,859,332.85
  5. Step 5: Solve for x
    x = 281,859,332.85/15,455.65
  6. Step 6: Final answer
    x = 18,236.65

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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.