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Finding the Fourth Proportional to 14,587.80, 21,881.70 and 9,058.20

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Solution

The fourth proportional to 14,587.80, 21,881.70 and 9,058.20 is: 13,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,587.80 : 21,881.70 = 9,058.20 : x
  2. Step 2: Convert to fraction form
    14,587.80/21,881.70 = 9,058.20/x
  3. Step 3: Cross multiply
    14,587.80x = 21,881.70 × 9,058.20
  4. Step 4: Simplify right side
    14,587.80x = 198,208,814.94
  5. Step 5: Solve for x
    x = 198,208,814.94/14,587.80
  6. Step 6: Final answer
    x = 13,587.30

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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.