Home / 15,706.53-21,651.05-13,307.65

Finding the Fourth Proportional to 15,706.53, 21,651.05 and 13,307.65

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Solution

The fourth proportional to 15,706.53, 21,651.05 and 13,307.65 is: 18,344.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,706.53 : 21,651.05 = 13,307.65 : x
  2. Step 2: Convert to fraction form
    15,706.53/21,651.05 = 13,307.65/x
  3. Step 3: Cross multiply
    15,706.53x = 21,651.05 × 13,307.65
  4. Step 4: Simplify right side
    15,706.53x = 288,124,574.67
  5. Step 5: Solve for x
    x = 288,124,574.67/15,706.53
  6. Step 6: Final answer
    x = 18,344.25

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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.