Home / 19,140.50-26,415.42-10,643.40

Finding the Fourth Proportional to 19,140.50, 26,415.42 and 10,643.40

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Solution

The fourth proportional to 19,140.50, 26,415.42 and 10,643.40 is: 14,688.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.50 : 26,415.42 = 10,643.40 : x
  2. Step 2: Convert to fraction form
    19,140.50/26,415.42 = 10,643.40/x
  3. Step 3: Cross multiply
    19,140.50x = 26,415.42 × 10,643.40
  4. Step 4: Simplify right side
    19,140.50x = 281,149,841.32
  5. Step 5: Solve for x
    x = 281,149,841.32/19,140.50
  6. Step 6: Final answer
    x = 14,688.74

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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.