Home / 15,829.84-21,845.18-9,543.43

Finding the Fourth Proportional to 15,829.84, 21,845.18 and 9,543.43

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Solution

The fourth proportional to 15,829.84, 21,845.18 and 9,543.43 is: 13,169.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,829.84 : 21,845.18 = 9,543.43 : x
  2. Step 2: Convert to fraction form
    15,829.84/21,845.18 = 9,543.43/x
  3. Step 3: Cross multiply
    15,829.84x = 21,845.18 × 9,543.43
  4. Step 4: Simplify right side
    15,829.84x = 208,477,946.17
  5. Step 5: Solve for x
    x = 208,477,946.17/15,829.84
  6. Step 6: Final answer
    x = 13,169.93

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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.