Home / 28,036.55-38,689.95-15,289.83

Finding the Fourth Proportional to 28,036.55, 38,689.95 and 15,289.83

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Solution

The fourth proportional to 28,036.55, 38,689.95 and 15,289.83 is: 21,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.55 : 38,689.95 = 15,289.83 : x
  2. Step 2: Convert to fraction form
    28,036.55/38,689.95 = 15,289.83/x
  3. Step 3: Cross multiply
    28,036.55x = 38,689.95 × 15,289.83
  4. Step 4: Simplify right side
    28,036.55x = 591,562,681.76
  5. Step 5: Solve for x
    x = 591,562,681.76/28,036.55
  6. Step 6: Final answer
    x = 21,099.70

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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.