Home / 15,510.48-21,404.88-8,437.40

Finding the Fourth Proportional to 15,510.48, 21,404.88 and 8,437.40

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Solution

The fourth proportional to 15,510.48, 21,404.88 and 8,437.40 is: 11,643.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.48 : 21,404.88 = 8,437.40 : x
  2. Step 2: Convert to fraction form
    15,510.48/21,404.88 = 8,437.40/x
  3. Step 3: Cross multiply
    15,510.48x = 21,404.88 × 8,437.40
  4. Step 4: Simplify right side
    15,510.48x = 180,601,534.51
  5. Step 5: Solve for x
    x = 180,601,534.51/15,510.48
  6. Step 6: Final answer
    x = 11,643.84

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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.