Home / 15,434.02-21,298.78-8,360.40

Finding the Fourth Proportional to 15,434.02, 21,298.78 and 8,360.40

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Solution

The fourth proportional to 15,434.02, 21,298.78 and 8,360.40 is: 11,537.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.02 : 21,298.78 = 8,360.40 : x
  2. Step 2: Convert to fraction form
    15,434.02/21,298.78 = 8,360.40/x
  3. Step 3: Cross multiply
    15,434.02x = 21,298.78 × 8,360.40
  4. Step 4: Simplify right side
    15,434.02x = 178,066,320.31
  5. Step 5: Solve for x
    x = 178,066,320.31/15,434.02
  6. Step 6: Final answer
    x = 11,537.26

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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.