Home / 21,457.93-29,605.83-12,503.72

Finding the Fourth Proportional to 21,457.93, 29,605.83 and 12,503.72

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Solution

The fourth proportional to 21,457.93, 29,605.83 and 12,503.72 is: 17,251.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.93 : 29,605.83 = 12,503.72 : x
  2. Step 2: Convert to fraction form
    21,457.93/29,605.83 = 12,503.72/x
  3. Step 3: Cross multiply
    21,457.93x = 29,605.83 × 12,503.72
  4. Step 4: Simplify right side
    21,457.93x = 370,182,904.45
  5. Step 5: Solve for x
    x = 370,182,904.45/21,457.93
  6. Step 6: Final answer
    x = 17,251.57

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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.