Home / 15,547.99-21,459.70-9,881.63

Finding the Fourth Proportional to 15,547.99, 21,459.70 and 9,881.63

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Solution

The fourth proportional to 15,547.99, 21,459.70 and 9,881.63 is: 13,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.99 : 21,459.70 = 9,881.63 : x
  2. Step 2: Convert to fraction form
    15,547.99/21,459.70 = 9,881.63/x
  3. Step 3: Cross multiply
    15,547.99x = 21,459.70 × 9,881.63
  4. Step 4: Simplify right side
    15,547.99x = 212,056,815.31
  5. Step 5: Solve for x
    x = 212,056,815.31/15,547.99
  6. Step 6: Final answer
    x = 13,638.86

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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.