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Finding the Fourth Proportional to 10,897.90, 14,991.91 and 9,547.43

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Solution

The fourth proportional to 10,897.90, 14,991.91 and 9,547.43 is: 13,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,897.90 : 14,991.91 = 9,547.43 : x
  2. Step 2: Convert to fraction form
    10,897.90/14,991.91 = 9,547.43/x
  3. Step 3: Cross multiply
    10,897.90x = 14,991.91 × 9,547.43
  4. Step 4: Simplify right side
    10,897.90x = 143,134,211.29
  5. Step 5: Solve for x
    x = 143,134,211.29/10,897.90
  6. Step 6: Final answer
    x = 13,134.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.