Home / 25,587.45-38,208.51-20,916.63

Finding the Fourth Proportional to 25,587.45, 38,208.51 and 20,916.63

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Solution

The fourth proportional to 25,587.45, 38,208.51 and 20,916.63 is: 31,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,587.45 : 38,208.51 = 20,916.63 : x
  2. Step 2: Convert to fraction form
    25,587.45/38,208.51 = 20,916.63/x
  3. Step 3: Cross multiply
    25,587.45x = 38,208.51 × 20,916.63
  4. Step 4: Simplify right side
    25,587.45x = 799,193,266.52
  5. Step 5: Solve for x
    x = 799,193,266.52/25,587.45
  6. Step 6: Final answer
    x = 31,233.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.