Home / 15,430.89-21,274.74-12,595.35

Finding the Fourth Proportional to 15,430.89, 21,274.74 and 12,595.35

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Solution

The fourth proportional to 15,430.89, 21,274.74 and 12,595.35 is: 17,365.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.89 : 21,274.74 = 12,595.35 : x
  2. Step 2: Convert to fraction form
    15,430.89/21,274.74 = 12,595.35/x
  3. Step 3: Cross multiply
    15,430.89x = 21,274.74 × 12,595.35
  4. Step 4: Simplify right side
    15,430.89x = 267,962,796.46
  5. Step 5: Solve for x
    x = 267,962,796.46/15,430.89
  6. Step 6: Final answer
    x = 17,365.35

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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.