Home / 28,307.80-42,462.42-15,820.84

Finding the Fourth Proportional to 28,307.80, 42,462.42 and 15,820.84

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Solution

The fourth proportional to 28,307.80, 42,462.42 and 15,820.84 is: 23,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.80 : 42,462.42 = 15,820.84 : x
  2. Step 2: Convert to fraction form
    28,307.80/42,462.42 = 15,820.84/x
  3. Step 3: Cross multiply
    28,307.80x = 42,462.42 × 15,820.84
  4. Step 4: Simplify right side
    28,307.80x = 671,791,152.83
  5. Step 5: Solve for x
    x = 671,791,152.83/28,307.80
  6. Step 6: Final answer
    x = 23,731.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.