Home / 13,038.53-19,520.52-12,210.91

Finding the Fourth Proportional to 13,038.53, 19,520.52 and 12,210.91

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Solution

The fourth proportional to 13,038.53, 19,520.52 and 12,210.91 is: 18,281.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.53 : 19,520.52 = 12,210.91 : x
  2. Step 2: Convert to fraction form
    13,038.53/19,520.52 = 12,210.91/x
  3. Step 3: Cross multiply
    13,038.53x = 19,520.52 × 12,210.91
  4. Step 4: Simplify right side
    13,038.53x = 238,363,312.87
  5. Step 5: Solve for x
    x = 238,363,312.87/13,038.53
  6. Step 6: Final answer
    x = 18,281.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.