Home / 21,003.08-28,981.63-14,211.93

Finding the Fourth Proportional to 21,003.08, 28,981.63 and 14,211.93

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Solution

The fourth proportional to 21,003.08, 28,981.63 and 14,211.93 is: 19,610.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.08 : 28,981.63 = 14,211.93 : x
  2. Step 2: Convert to fraction form
    21,003.08/28,981.63 = 14,211.93/x
  3. Step 3: Cross multiply
    21,003.08x = 28,981.63 × 14,211.93
  4. Step 4: Simplify right side
    21,003.08x = 411,885,023.29
  5. Step 5: Solve for x
    x = 411,885,023.29/21,003.08
  6. Step 6: Final answer
    x = 19,610.70

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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.