Home / 15,486.63-21,368.40-9,432.81

Finding the Fourth Proportional to 15,486.63, 21,368.40 and 9,432.81

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Solution

The fourth proportional to 15,486.63, 21,368.40 and 9,432.81 is: 13,015.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.63 : 21,368.40 = 9,432.81 : x
  2. Step 2: Convert to fraction form
    15,486.63/21,368.40 = 9,432.81/x
  3. Step 3: Cross multiply
    15,486.63x = 21,368.40 × 9,432.81
  4. Step 4: Simplify right side
    15,486.63x = 201,564,010.04
  5. Step 5: Solve for x
    x = 201,564,010.04/15,486.63
  6. Step 6: Final answer
    x = 13,015.36

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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.