Home / 13,780.02-19,016.33-7,492.40

Finding the Fourth Proportional to 13,780.02, 19,016.33 and 7,492.40

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Solution

The fourth proportional to 13,780.02, 19,016.33 and 7,492.40 is: 10,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.02 : 19,016.33 = 7,492.40 : x
  2. Step 2: Convert to fraction form
    13,780.02/19,016.33 = 7,492.40/x
  3. Step 3: Cross multiply
    13,780.02x = 19,016.33 × 7,492.40
  4. Step 4: Simplify right side
    13,780.02x = 142,477,818.35
  5. Step 5: Solve for x
    x = 142,477,818.35/13,780.02
  6. Step 6: Final answer
    x = 10,339.45

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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.