Home / 15,510.60-21,405.02-8,437.05

Finding the Fourth Proportional to 15,510.60, 21,405.02 and 8,437.05

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Solution

The fourth proportional to 15,510.60, 21,405.02 and 8,437.05 is: 11,643.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.60 : 21,405.02 = 8,437.05 : x
  2. Step 2: Convert to fraction form
    15,510.60/21,405.02 = 8,437.05/x
  3. Step 3: Cross multiply
    15,510.60x = 21,405.02 × 8,437.05
  4. Step 4: Simplify right side
    15,510.60x = 180,595,181.81
  5. Step 5: Solve for x
    x = 180,595,181.81/15,510.60
  6. Step 6: Final answer
    x = 11,643.34

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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.