Home / 10,500.47-14,490.68-5,720.45

Finding the Fourth Proportional to 10,500.47, 14,490.68 and 5,720.45

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Solution

The fourth proportional to 10,500.47, 14,490.68 and 5,720.45 is: 7,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500.47 : 14,490.68 = 5,720.45 : x
  2. Step 2: Convert to fraction form
    10,500.47/14,490.68 = 5,720.45/x
  3. Step 3: Cross multiply
    10,500.47x = 14,490.68 × 5,720.45
  4. Step 4: Simplify right side
    10,500.47x = 82,893,109.35
  5. Step 5: Solve for x
    x = 82,893,109.35/10,500.47
  6. Step 6: Final answer
    x = 7,894.23

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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.