Home / 28,310.37-39,068.79-15,564.08

Finding the Fourth Proportional to 28,310.37, 39,068.79 and 15,564.08

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Solution

The fourth proportional to 28,310.37, 39,068.79 and 15,564.08 is: 21,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.37 : 39,068.79 = 15,564.08 : x
  2. Step 2: Convert to fraction form
    28,310.37/39,068.79 = 15,564.08/x
  3. Step 3: Cross multiply
    28,310.37x = 39,068.79 × 15,564.08
  4. Step 4: Simplify right side
    28,310.37x = 608,069,870.74
  5. Step 5: Solve for x
    x = 608,069,870.74/28,310.37
  6. Step 6: Final answer
    x = 21,478.70

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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.