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Finding the Fourth Proportional to 30,368.98, 45,554.86 and 9,307.50

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Solution

The fourth proportional to 30,368.98, 45,554.86 and 9,307.50 is: 13,961.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,368.98 : 45,554.86 = 9,307.50 : x
  2. Step 2: Convert to fraction form
    30,368.98/45,554.86 = 9,307.50/x
  3. Step 3: Cross multiply
    30,368.98x = 45,554.86 × 9,307.50
  4. Step 4: Simplify right side
    30,368.98x = 424,001,859.45
  5. Step 5: Solve for x
    x = 424,001,859.45/30,368.98
  6. Step 6: Final answer
    x = 13,961.68

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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.