Home / 15,840.29-21,868.28-10,812.02

Finding the Fourth Proportional to 15,840.29, 21,868.28 and 10,812.02

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Solution

The fourth proportional to 15,840.29, 21,868.28 and 10,812.02 is: 14,926.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.29 : 21,868.28 = 10,812.02 : x
  2. Step 2: Convert to fraction form
    15,840.29/21,868.28 = 10,812.02/x
  3. Step 3: Cross multiply
    15,840.29x = 21,868.28 × 10,812.02
  4. Step 4: Simplify right side
    15,840.29x = 236,440,157.87
  5. Step 5: Solve for x
    x = 236,440,157.87/15,840.29
  6. Step 6: Final answer
    x = 14,926.50

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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.