Home / 25,445.79-35,100.49-15,869.05

Finding the Fourth Proportional to 25,445.79, 35,100.49 and 15,869.05

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Solution

The fourth proportional to 25,445.79, 35,100.49 and 15,869.05 is: 21,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,445.79 : 35,100.49 = 15,869.05 : x
  2. Step 2: Convert to fraction form
    25,445.79/35,100.49 = 15,869.05/x
  3. Step 3: Cross multiply
    25,445.79x = 35,100.49 × 15,869.05
  4. Step 4: Simplify right side
    25,445.79x = 557,011,548.19
  5. Step 5: Solve for x
    x = 557,011,548.19/25,445.79
  6. Step 6: Final answer
    x = 21,890.13

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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.