Home / 15,501.43-21,355.81-10,777.51

Finding the Fourth Proportional to 15,501.43, 21,355.81 and 10,777.51

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Solution

The fourth proportional to 15,501.43, 21,355.81 and 10,777.51 is: 14,847.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.43 : 21,355.81 = 10,777.51 : x
  2. Step 2: Convert to fraction form
    15,501.43/21,355.81 = 10,777.51/x
  3. Step 3: Cross multiply
    15,501.43x = 21,355.81 × 10,777.51
  4. Step 4: Simplify right side
    15,501.43x = 230,162,455.83
  5. Step 5: Solve for x
    x = 230,162,455.83/15,501.43
  6. Step 6: Final answer
    x = 14,847.82

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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.