Home / 28,526.40-39,362.94-15,777.81

Finding the Fourth Proportional to 28,526.40, 39,362.94 and 15,777.81

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Solution

The fourth proportional to 28,526.40, 39,362.94 and 15,777.81 is: 21,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.40 : 39,362.94 = 15,777.81 : x
  2. Step 2: Convert to fraction form
    28,526.40/39,362.94 = 15,777.81/x
  3. Step 3: Cross multiply
    28,526.40x = 39,362.94 × 15,777.81
  4. Step 4: Simplify right side
    28,526.40x = 621,060,988.36
  5. Step 5: Solve for x
    x = 621,060,988.36/28,526.40
  6. Step 6: Final answer
    x = 21,771.45

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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.