Home / 18,916.38-26,106.12-10,420.05

Finding the Fourth Proportional to 18,916.38, 26,106.12 and 10,420.05

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Solution

The fourth proportional to 18,916.38, 26,106.12 and 10,420.05 is: 14,380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916.38 : 26,106.12 = 10,420.05 : x
  2. Step 2: Convert to fraction form
    18,916.38/26,106.12 = 10,420.05/x
  3. Step 3: Cross multiply
    18,916.38x = 26,106.12 × 10,420.05
  4. Step 4: Simplify right side
    18,916.38x = 272,027,075.71
  5. Step 5: Solve for x
    x = 272,027,075.71/18,916.38
  6. Step 6: Final answer
    x = 14,380.50

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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.