Home / 28,488.90-39,312.64-15,741.93

Finding the Fourth Proportional to 28,488.90, 39,312.64 and 15,741.93

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Solution

The fourth proportional to 28,488.90, 39,312.64 and 15,741.93 is: 21,722.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.90 : 39,312.64 = 15,741.93 : x
  2. Step 2: Convert to fraction form
    28,488.90/39,312.64 = 15,741.93/x
  3. Step 3: Cross multiply
    28,488.90x = 39,312.64 × 15,741.93
  4. Step 4: Simplify right side
    28,488.90x = 618,856,827.00
  5. Step 5: Solve for x
    x = 618,856,827.00/28,488.90
  6. Step 6: Final answer
    x = 21,722.74

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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.