Home / 28,012.89-38,657.58-15,437.64

Finding the Fourth Proportional to 28,012.89, 38,657.58 and 15,437.64

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Solution

The fourth proportional to 28,012.89, 38,657.58 and 15,437.64 is: 21,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.89 : 38,657.58 = 15,437.64 : x
  2. Step 2: Convert to fraction form
    28,012.89/38,657.58 = 15,437.64/x
  3. Step 3: Cross multiply
    28,012.89x = 38,657.58 × 15,437.64
  4. Step 4: Simplify right side
    28,012.89x = 596,781,803.31
  5. Step 5: Solve for x
    x = 596,781,803.31/28,012.89
  6. Step 6: Final answer
    x = 21,303.83

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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.