Home / 28,510.86-39,343.29-15,763.28

Finding the Fourth Proportional to 28,510.86, 39,343.29 and 15,763.28

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Solution

The fourth proportional to 28,510.86, 39,343.29 and 15,763.28 is: 21,752.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.86 : 39,343.29 = 15,763.28 : x
  2. Step 2: Convert to fraction form
    28,510.86/39,343.29 = 15,763.28/x
  3. Step 3: Cross multiply
    28,510.86x = 39,343.29 × 15,763.28
  4. Step 4: Simplify right side
    28,510.86x = 620,179,099.67
  5. Step 5: Solve for x
    x = 620,179,099.67/28,510.86
  6. Step 6: Final answer
    x = 21,752.38

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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.