Home / 21,370.07-29,501.95-13,306.19

Finding the Fourth Proportional to 21,370.07, 29,501.95 and 13,306.19

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Solution

The fourth proportional to 21,370.07, 29,501.95 and 13,306.19 is: 18,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.07 : 29,501.95 = 13,306.19 : x
  2. Step 2: Convert to fraction form
    21,370.07/29,501.95 = 13,306.19/x
  3. Step 3: Cross multiply
    21,370.07x = 29,501.95 × 13,306.19
  4. Step 4: Simplify right side
    21,370.07x = 392,558,400.31
  5. Step 5: Solve for x
    x = 392,558,400.31/21,370.07
  6. Step 6: Final answer
    x = 18,369.55

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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.