Home / 21,055.50-31,583.40-14,461.70

Finding the Fourth Proportional to 21,055.50, 31,583.40 and 14,461.70

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Solution

The fourth proportional to 21,055.50, 31,583.40 and 14,461.70 is: 21,692.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.50 : 31,583.40 = 14,461.70 : x
  2. Step 2: Convert to fraction form
    21,055.50/31,583.40 = 14,461.70/x
  3. Step 3: Cross multiply
    21,055.50x = 31,583.40 × 14,461.70
  4. Step 4: Simplify right side
    21,055.50x = 456,749,655.78
  5. Step 5: Solve for x
    x = 456,749,655.78/21,055.50
  6. Step 6: Final answer
    x = 21,692.65

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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.