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Finding the Fourth Proportional to 30,302.40, 45,461.70 and 21,554.40

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Solution

The fourth proportional to 30,302.40, 45,461.70 and 21,554.40 is: 32,337.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,302.40 : 45,461.70 = 21,554.40 : x
  2. Step 2: Convert to fraction form
    30,302.40/45,461.70 = 21,554.40/x
  3. Step 3: Cross multiply
    30,302.40x = 45,461.70 × 21,554.40
  4. Step 4: Simplify right side
    30,302.40x = 979,899,666.48
  5. Step 5: Solve for x
    x = 979,899,666.48/30,302.40
  6. Step 6: Final answer
    x = 32,337.36

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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.