Home / 15,454.79-21,342.03-12,430.35

Finding the Fourth Proportional to 15,454.79, 21,342.03 and 12,430.35

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Solution

The fourth proportional to 15,454.79, 21,342.03 and 12,430.35 is: 17,165.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.79 : 21,342.03 = 12,430.35 : x
  2. Step 2: Convert to fraction form
    15,454.79/21,342.03 = 12,430.35/x
  3. Step 3: Cross multiply
    15,454.79x = 21,342.03 × 12,430.35
  4. Step 4: Simplify right side
    15,454.79x = 265,288,902.61
  5. Step 5: Solve for x
    x = 265,288,902.61/15,454.79
  6. Step 6: Final answer
    x = 17,165.49

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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.