Home / 18,214.74-25,045.47-15,557.40

Finding the Fourth Proportional to 18,214.74, 25,045.47 and 15,557.40

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Solution

The fourth proportional to 18,214.74, 25,045.47 and 15,557.40 is: 21,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,214.74 : 25,045.47 = 15,557.40 : x
  2. Step 2: Convert to fraction form
    18,214.74/25,045.47 = 15,557.40/x
  3. Step 3: Cross multiply
    18,214.74x = 25,045.47 × 15,557.40
  4. Step 4: Simplify right side
    18,214.74x = 389,642,394.98
  5. Step 5: Solve for x
    x = 389,642,394.98/18,214.74
  6. Step 6: Final answer
    x = 21,391.60

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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.