Home / 28,907.47-39,898.98-18,818.34

Finding the Fourth Proportional to 28,907.47, 39,898.98 and 18,818.34

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Solution

The fourth proportional to 28,907.47, 39,898.98 and 18,818.34 is: 25,973.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.47 : 39,898.98 = 18,818.34 : x
  2. Step 2: Convert to fraction form
    28,907.47/39,898.98 = 18,818.34/x
  3. Step 3: Cross multiply
    28,907.47x = 39,898.98 × 18,818.34
  4. Step 4: Simplify right side
    28,907.47x = 750,832,646.10
  5. Step 5: Solve for x
    x = 750,832,646.10/28,907.47
  6. Step 6: Final answer
    x = 25,973.65

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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.