Home / 15,506.83-21,400.10-8,792.40

Finding the Fourth Proportional to 15,506.83, 21,400.10 and 8,792.40

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Solution

The fourth proportional to 15,506.83, 21,400.10 and 8,792.40 is: 12,133.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.83 : 21,400.10 = 8,792.40 : x
  2. Step 2: Convert to fraction form
    15,506.83/21,400.10 = 8,792.40/x
  3. Step 3: Cross multiply
    15,506.83x = 21,400.10 × 8,792.40
  4. Step 4: Simplify right side
    15,506.83x = 188,158,239.24
  5. Step 5: Solve for x
    x = 188,158,239.24/15,506.83
  6. Step 6: Final answer
    x = 12,133.89

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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.