Home / 30,531.60-45,718.53-21,073.10

Finding the Fourth Proportional to 30,531.60, 45,718.53 and 21,073.10

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Solution

The fourth proportional to 30,531.60, 45,718.53 and 21,073.10 is: 31,555.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.60 : 45,718.53 = 21,073.10 : x
  2. Step 2: Convert to fraction form
    30,531.60/45,718.53 = 21,073.10/x
  3. Step 3: Cross multiply
    30,531.60x = 45,718.53 × 21,073.10
  4. Step 4: Simplify right side
    30,531.60x = 963,430,846.93
  5. Step 5: Solve for x
    x = 963,430,846.93/30,531.60
  6. Step 6: Final answer
    x = 31,555.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.