Home / 25,988.85-38,916.86-14,289.21

Finding the Fourth Proportional to 25,988.85, 38,916.86 and 14,289.21

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Solution

The fourth proportional to 25,988.85, 38,916.86 and 14,289.21 is: 21,397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,988.85 : 38,916.86 = 14,289.21 : x
  2. Step 2: Convert to fraction form
    25,988.85/38,916.86 = 14,289.21/x
  3. Step 3: Cross multiply
    25,988.85x = 38,916.86 × 14,289.21
  4. Step 4: Simplify right side
    25,988.85x = 556,091,113.63
  5. Step 5: Solve for x
    x = 556,091,113.63/25,988.85
  6. Step 6: Final answer
    x = 21,397.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.