Home / 25,402.61-35,021.16-21,416.81

Finding the Fourth Proportional to 25,402.61, 35,021.16 and 21,416.81

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Solution

The fourth proportional to 25,402.61, 35,021.16 and 21,416.81 is: 29,526.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,402.61 : 35,021.16 = 21,416.81 : x
  2. Step 2: Convert to fraction form
    25,402.61/35,021.16 = 21,416.81/x
  3. Step 3: Cross multiply
    25,402.61x = 35,021.16 × 21,416.81
  4. Step 4: Simplify right side
    25,402.61x = 750,041,354.59
  5. Step 5: Solve for x
    x = 750,041,354.59/25,402.61
  6. Step 6: Final answer
    x = 29,526.15

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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.