Home / 21,088.04-29,100.63-12,135.86

Finding the Fourth Proportional to 21,088.04, 29,100.63 and 12,135.86

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Solution

The fourth proportional to 21,088.04, 29,100.63 and 12,135.86 is: 16,746.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.04 : 29,100.63 = 12,135.86 : x
  2. Step 2: Convert to fraction form
    21,088.04/29,100.63 = 12,135.86/x
  3. Step 3: Cross multiply
    21,088.04x = 29,100.63 × 12,135.86
  4. Step 4: Simplify right side
    21,088.04x = 353,161,244.34
  5. Step 5: Solve for x
    x = 353,161,244.34/21,088.04
  6. Step 6: Final answer
    x = 16,746.99

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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.