Home / 15,314.89-21,068.93-14,658.79

Finding the Fourth Proportional to 15,314.89, 21,068.93 and 14,658.79

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Solution

The fourth proportional to 15,314.89, 21,068.93 and 14,658.79 is: 20,166.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.89 : 21,068.93 = 14,658.79 : x
  2. Step 2: Convert to fraction form
    15,314.89/21,068.93 = 14,658.79/x
  3. Step 3: Cross multiply
    15,314.89x = 21,068.93 × 14,658.79
  4. Step 4: Simplify right side
    15,314.89x = 308,845,020.39
  5. Step 5: Solve for x
    x = 308,845,020.39/15,314.89
  6. Step 6: Final answer
    x = 20,166.32

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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.