Home / 27,984.08-38,617.80-15,408.40

Finding the Fourth Proportional to 27,984.08, 38,617.80 and 15,408.40

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Solution

The fourth proportional to 27,984.08, 38,617.80 and 15,408.40 is: 21,263.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,984.08 : 38,617.80 = 15,408.40 : x
  2. Step 2: Convert to fraction form
    27,984.08/38,617.80 = 15,408.40/x
  3. Step 3: Cross multiply
    27,984.08x = 38,617.80 × 15,408.40
  4. Step 4: Simplify right side
    27,984.08x = 595,038,509.52
  5. Step 5: Solve for x
    x = 595,038,509.52/27,984.08
  6. Step 6: Final answer
    x = 21,263.47

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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.