Home / 28,307.18-39,064.20-15,561.02

Finding the Fourth Proportional to 28,307.18, 39,064.20 and 15,561.02

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Solution

The fourth proportional to 28,307.18, 39,064.20 and 15,561.02 is: 21,474.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.18 : 39,064.20 = 15,561.02 : x
  2. Step 2: Convert to fraction form
    28,307.18/39,064.20 = 15,561.02/x
  3. Step 3: Cross multiply
    28,307.18x = 39,064.20 × 15,561.02
  4. Step 4: Simplify right side
    28,307.18x = 607,878,797.48
  5. Step 5: Solve for x
    x = 607,878,797.48/28,307.18
  6. Step 6: Final answer
    x = 21,474.37

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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.